![]() "During the late 1950s another area of progress was the development and deployment of AN/FPS-14 and AN/FPS-18 gap-filler radars. Having a range of around sixty-five miles, these radars were placed in areas where it was thought enemy aircraft could fly low to avoid detection by the longer-range radars of the permanent and mobile radar networks. Gap-filler radar deployment peaked in December 1960 at 131 sites throughout the continental United States. Because the introduction of gap-filler radars alleviated the need for civilians to scan the skies for enemy bombers, the ADC disestablished the Ground Observer Corps on January 31, 1959."
Searching The Skies ![]()
AN/FPS-74Frequency-diverse gap-filler radar, similar to AN/FPS-63; neither was ever fielded.
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![]() In the USGS aerial image above, from the "TerraServer" website, http://terraserver-usa.com/image.aspx?T=4&S=8&Z=18&X=5969&Y=86369&W=2, the old Air Force gap-filler radar radome is the round white object immediately to the left (east) of the baseball diamond. The Nike earthen berm is the brownish, tree-covered area around it to the east and south. |
Here's an excerpt from a newspaper article about Montana gap-filler installations. |
Photos below contributed by Don Horton
[Click to download 185KB PDF file]
Designator | Site | State | Notes | N. Latitude | W. Longitude | M-95C | Alamogordo, NM ** | NM | Alder River, NS, CN | NS | 45-28-21.53 | 61-44-24.92 | TM-177B / P-28E | Alexander, ND | ND | 47-40-41.52 | 103-46-49.6 | P-18C | Algona, IA ** | IA | CG8 | Algonquin Park, ON, CN | ON | 45-33-43 | 078-33-58 | M-130B | Allen, NC | NC | 35-13-31.7 | 080-38-07.2 | M-112C | Alma, GA | GA | 31-36-28.85 | 082-32-48.56 | P-34E | Alpena, MI | MI | 45-04-15.3 | 083-34-02.7 | P-46A | Anacortes, WA | WA | 48-27-13.85 | 122-37-33.84 | P-50B | Andes, NY | NY | 42-13-13.0 | 074-51-05.1 | TM-183A, M-95H | Animas, NM ** | NM | TM-183B, M-95I, M-92F | Apache, AZ ** | AZ | 31-36-50 | 109-10-42 | P-42A / M-111F | Aquone, NC | NC | 35-10-39.5 | 083-33-47.16 | P-19D | Arbor Vitae, WI ** | WI | P-70A | Arcadia, MO ** | MO | M-99A | Ashley, ND ** | ND | P-69C | Askov, MN | MN | 46-14-12.31 | 092-44-32.63 | CG17 | Atikokan, ON, CN | ON | 48-47-45.5 | 091-36-41 | P-30J / P-49E | Atlanta, NY ** | NY | P-69D | Aurora, MN | MN | 47-35-52.45 | 092-13-27.54 | SM-138A | Backus, MN ** | MN | P-17B | Bagley, MN | MN | 47-36-18.4 | 095-25-33.4 | P-43A | Bainbridge, OH | OH | 39-15-35.6 | 083-14-16.0 | M-128F | Baker, CA ** | CA | ~35-28-22 | ~115-51-57 | M-89A | Ballinger, TX ** | TX | 31-40-53 | 099-58-27 | P-14C | Bangor, NY | NY | 44-49-38.85 | 074-22-43.9 | M-111B | Barnesville, GA | GA | 33-04-00.50 | 084-07-52.45 | CG27 / P-66C | Batchawana, ON, CN | ON | 47-04-31 | 084-22-56 | SM-164A | Beatty, NV ** | NV | 37-04-53 | 116-49-06 | CG37 | Beaver Tower, QC, CN | QC | 48-02-18 | 075-52-37 | SM-133B | Belgrade, NE ** | NE | CG15 | Belleterre, QC, CN | QC | 47-21-25 | 078-40-54.8 | SM-139B | Bemis, SD ** | SD | M-92C | Benson, AZ | AZ | 31-59-00 | 110-12-03 | P-18B | Beresford, SD ** | SD | P-68B | Bergman, AR ** | AR | P-54A, RP-63E, P-56B | Bethany Beach, DE | DE | 38-31-35 | 075-06-26 | M-118C | Beulah, OR ** | OR | SM-132A | Big Falls, MN | MN | 48-11-26.4 | 093-47-30.8 | M-89B | Big Spring, TX | TX | 32-13-50.1 | 101-29-30.4 | CG19 / M-119C | Biscotasing, ON, CN | ON | 47-15-33.5 | 082-07-17 | SM-164D | Bishop, CA ** | CA | P-30I | Blaine, PA ** | PA | SM-151B | Blanchard, ID ** | ID | SM-134A, SM-133B | Bloomfield, NE ** | NE | P-14B | Blue Mtn. Lake, NY | NY | 43-52-20.7 | 074-24-04.1 | M-114B | Blythe Island, GA | GA | 31-09-43.29 | 081-33-44.07 | P-68D | Bolivar, MO ** | MO | SM-163A | Boulder City, NV | NV | 35-59-44.85 | 114-51-48.97 | M-88A | Bovina, TX ** | TX | P-70G | Bowling Green, MO | MO | 39-19-17.0 | 091-09-08.16 | SM-145A | Bradyville, TN | TN | 35-42-10.54 | 086-12-30.55 | CG_ | Brampton, ON, CN | ON | TM-199B | Bridgeboro, GA | GA | 31-25-31.5 | 083-57-07.0 | CG22 | Bridgetown, NS, CN | NS | 44-52-34.75 | 065-18-23.30 | P-80B | Bridgewater, ME | ME | 46-25-15.82 | 068-01-28.10 | P-21A | Brockport, NY | NY | 43-11-28.72 | 077-56-00.75 | M-98B | Brockway, MT | MT | 47-17-00.95 | 105-59-01.8 | RP-62E | Brookfield, OH | OH | 41-13-03.55 | 080-33-43.62 | P-19C | Brooks, WI | WI | 43-49-38 | 089-42-53.7 | M-89C | Brownfield, TX | TX | 33-11-15.94 | 102-23-02.00 | P-24A | Browning, MT | MT | 48-52-14.28 | 113-10-22.30 | Buckhorn, ON, CN | ON | M-114A | Bunnell, FL | FL | 29-21-16.15 | 081-18-42.10 | M-113A | Burgess, SC ** | SC | M-118A | Burns Junction, OR | OR | 42-43-00 | 117-52-14.5 | P-20A | Burnside, MI | MI | 43-10-53.85 | 083-03-11.45 | SM-162F | Cactus City, CA ** | CA | M-128E | Cadiz Summit, CA ** | CA | N-28A | Cape Makkovik AS, NL, CN | NL | 55-13-30 | 059-08-45 | P-33A | Capetown, CA | CA | 40-26-40.37 | 124-23-27.56 | M-90C | Carlsbad, NM ** | NM | P-70A | Carmi, IL ** | IL | 38-05-40.3 | 088-07-03.5 | TM-198A | Carrabelle, FL | FL | 29-51-56.5 | 084-37-52.7 | TM-188A | Carrizo Springs, TX | TX | 28-30-13.57 | 099-49-58.40 | M-94A | Carrizozo, NM ** | NM | TM-177A | Carson, ND ** | ND | RP-31G | Cedar Grove, WI ** | WI | CG11 / M-119B | Chapleau, ON, CN | ON | 47-48-34.53 | 083-34-45.75 | P-21B | Charlotte Center, NY | NY | 42-18-15.7 | 079-10-40.3 | P-1C / RP-1C | Chehalis, WA | WA | 46-33-16.88 | 123-03-29.41 | P-50C | Cherry Valley, NY ** | NY | P-55A | Chestertown, MD ** | MD | 39-14-50.5 | 076-08-35 | P-45B / P-10E | Chilmark, MA | MA | 41-21-18.94 | 070-44-06.82 | M-99D | Clark, SD ** | SD | P-30H / RP-62F | Claysburg, PA | PA | 40-17-21.25 | 078-33-54.10 | P-19N | Clintonville, WI ** | WI | P-20D | Clyde, OH ** | OH | SM-164B | Coaldale, NV ** | NV | TM-179A | Columbia Falls, MT ** | MT | M-95B | Columbus, NM | NM | 31-47-55.39 | 107-44-02.25 | TM-187B | Comstock, TX | TX | 29-51-29.47 | 101-09-42.77 | P-46B | Concrete, WA ** | WA | M-89F / M-88B | Cone, TX ** | TX | SM-162B | Corn Springs, CA | CA | 33-38-49.02 | 115-15-36.28 | M-92B, TM-181B | Covered Wells, AZ | AZ | 32-10-52.9 | 112-20-04.5 | P-76D | Coyote Wells, CA | CA | 32-41-27.05 | 115-53-21.75 | P-60C | Curlew, WA | WA | 48-52-37.46 | 118-47-07.80 | N-27A | Cut Throat Island AS, NL, CN | NL | 54-29-55.7 | 057-08-23.3 | M-91A | Daingerfield, TX ** | TX | P-71D / P-81A | Dallas Center, IA | IA | 41-43-05.5 | 093-54-19 | P-43D | Danville, OH ** | OH | M-94C | Datil, NM ** | NM | TM-199A | Davenport, AL | AL | 32-00-14 | 086-19-45 | P-29D | Dawson, ND ** | ND | P-80A | Deboullie Mtn., ME ** | ME | M-125A | Delhi, LA | LA | 32-19-40.52 | 091-33-24.65 | TM-189A / TM-191C | Delmita, TX | TX | 26-38-52.8 | 098-27-41.25 | M-127E | Denio, NV ** | NV | 41-51-38.3 | 119-20-56.3 | P-80C | Depot Mtn., ME | ME | 46-51-10.35 | 069-48-08.32 | SM-156B | Desert Peak, NV ** | NV | 39-12-42.65 | 118-49-54.50 | P-12B | Disston, OR | OR | 43-35-08.54 | 122-39-10.41 | TM-178A | Dodson, MT ** | MT | P-30A; P-9B | Duttonville, NJ ** | NJ | CG28 / P-66D | Eaglet River, ON, CN | ON | ~47-56-58.5 | ~085-24-57 | P-30C | East Meredith, PA ** | PA | P-70B | Edgewood, MO | MO | 39-19-17.0 | 091-09-08.15 | TM-196A, TM-198B | Eglin AFB, FL | FL | 30-33-14.52 | 086-45-36.04 | M-90D | El Paso Gap, NM ** | NM | M-95A | El Paso, TX | TX | 31-49-31.7 | 105-59-19.6 | M-111E | Elberton, GA | GA | 34-05-02.78 | 082-55-10.14 | P-17A | Elbow Lake, MN | MN | 46-05-36.55 | 095-57-25.65 | TM-182A; M-92E | Elfrida, AZ ** | AZ | 31-37-37 | 109-40-24 | M-116A, P-56C, M-117B | Elizabeth City, NC | NC | 36-14-46.14 | 076-15-20.24 | CG9 / P-66E | Elliot Lake, ON, CN | ON | 46-23-10 | 082-37-17 | N-22B | Elliston Ridge AS, NL, CN | NL | 48-37-33 | 053-03-31 | P-47A | Ellsworth, KS | KS | 38-50-28.65 | 098-11-48.68 | P-20B | Emery, MI | MI | 42-21-58.78 | 083-39-44.95 | M-116B / M-117D | Engelhard, NC | NC | 35-29-49.4 | 076-00-33.9 | M-95D | Engle, NM ** | NM | SM-144A | Erin, TN ** | TN | P-11B / TM-179C /SM- | Eureka, MT | MT | 48-51-52.63 | 115-07-31.87 | P-18A | Fairmont, MN ** | MN | P-79A | Fannett, TX | TX | 29-45-21 | 094-14-42.27 | CG45 | Father Lake, QC, CN | QC | 49-17-24 | 075-31-13 | P-66B | Fibre, MI | MI | 46-09-10.85 | 084-47-05.00 | P-20C | Flat Rock, MI ** | MI | CG5 | Formosa, ON, CN | ON | 43-55-51.5 | 081-00-23.7 | M-115B | Fort Bragg, NC | NC | 35-08-42.6 | 079-04-14.6 | P-10B | Fort Dearborn, NH | NH | 43-02-41.2 | 070-42-56.6 | SM-132C | Fort Frances, ON, CN | ON | P-56D | Fort Lee, VA ** | VA | N-27C | Fox Harbour AS, NL, CN | NL | 52-22-12 | 055-39-52 | P-69A | Franklin, MN ** | MN | SM-156A | Gabbs, NV | NV | 38-46-28.24 | 118-01-18.35 | M-95G | Gage, NM | NM | 32-12-26.2 | 108-07-35.15 | P-25A | Galata, MT | MT | 48-46-14.59 | 111-19-43.97 | SM-134C | Gannvalley, SD ** | SD | P-72A | Garland, KS | KS | 37-45-40.03 | 094-38-51.58 | P-68A | Gateway, AR ** | AR | M-113B | Georgetown, SC | SC | 33-18-57.5 | 079-19-26.1 | Geraldton, ON, CN | ON | P-9A | Gibbsboro, NJ | NJ | 39-49-24.05 | 074-57-14.2 | TM-177A / M-98A | Glendive, MT | MT | 47-02-38.79 | 104-40-54.12 | P-81D | Glennville, MN ** | MN | M-92D | Globe, AZ | AZ | 33-39-37.5 | 110-33-41 | CG39 | Gold Rock, ON, CN | ON | 49-25-50 | 092-51-43 | SM-164A | Goldfield, NV ** | NV | P-67E | Goshen, IN ** | IN | CG34 | Gowganda, ON, CN | ON | ~47-34-27 | ~080-28-44 | P-29B | Grafton, ND | ND | 48-24-43.1 | 097-22-05.75 | CG43 | Graham, ON, CN | ON | ~49-20-18.5 | ~090-32-46 | CG_ | Grand Fond, QC, CN | QC | Grand Fond, QC, CN | QC | P-66A | Grand Marais, MI | MI | 46-32-51.8 | 086-02-11.8 | SM-159B | Gray Court, SC ** | SC | 34-34-14 | 082-06-57 | P-34B | Grayling, MI ** | MI | ~ 44-40-37.25 | ~ 084-43-09.70 | P-1B | Greenwater, WA ** | WA | 47-02-27.48 | 121-35-47.35 | TM-196B | Gulfport, MS | MS | 30-24-26.10 | 089-03-31.50 | SM-163C | Halloran Springs, CA ** | CA | P-55C | Hallsboro, VA ** | VA | P-55D | Hanover, PA | PA | 39-51-28.3 | 076-56-52.6 | CG23 | Hastings, ON, CN | ON | 44-17-57 | 078-00-27 | P-30I | Hawley, PA ** | PA | SM-157C | Hayfork, CA | CA | 40-39-32.0 | 123-13-10.25 | M-125B / M-91B | Heflin, LA ** | LA | P-43B | Hellier, KY | KY | 37-17-08.1 | 082-31-36.9 | P-55B | Hermanville, MD | MD | 38-13-40.88 | 076-24-33.27 | P-49F | Higgins Bay, NY ** | NY | SM-139D | Hillhead, SD ** | SD | M-93B | Hillside, AZ | AZ | 34-25-44.5 | 112-57-46 | P-25B | Hogeland, MT | MT | 48-51-29.97 | 108-34-12.12 | M-116C / M-115C | Holly Ridge, NC | NC | 34-30-50.44 | 077-32-08.30 | M-111D | Homer, GA ** | GA | TM-181A; SM-162B | Horn, AZ ** | AZ | 32-57-07.5 | 113-29-44.5 | SM-134B | Howard, SD ** | SD | M-129B | Inverness, FL | FL | 28-41-17 | 082-24-06 | P-60A | Ione, WA | WA | 48-32-43.41 | 117-09-20.36 | Island Falls, ON, CN | ON | SM-157A | Janesville, CA | CA | 40-15-38.90 | 120-33-26.09 | M-112E | Jeffersonville, GA | GA | 32-33-45.86 | 083-23-32.68 | P-35C | Jim Falls, WI | WI | 45-02-12.06 | 091-20-54.04 | P-30F | Joliett, PA | PA | 40-36-32.40 | 076-27-42.35 | P-76F / P-59C | Joshua Tree, CA | CA | 34-09-17.77 | 116-12-08.09 | Z-210C | Jupiter, FL | FL | 26-55-59.7 | 080-04-12 | P-71B | King City, MO ** | MO | P-71C | Kingsley, IA ** | IA | P-82C | Kingston, IN | IN | 39-22-55.1 | 085-22-33.1 | P-40A | Kittitas, WA | WA | CG29 | L'Anse St. Jean, QC, CN | QC | ~48-01-20 | ~070-22-39 | CG31 | L'Ascension, QC, CN | QC | ~46-47-26 | ~074-50-55 | P-81C / P-35F | La Crescent, MN | MN | 43-51-34.67 | 091-18-59.60 | La Macaza, QC, CN | QC | P-81B | La Motte, IA | IA | 42-19-24.70 | 090-39-26.85 | TM-180B | La Pine, OR | OR | 43-41-22 | 121-15-16.5 | N-26B | La Scie AS, NL, CN | NL | 49-58-48 | 055-31-48 | CG12 | La Tuque, QC, CN | QC | Lac des Loups, QC, CN | QC | CG41 | Lac Luzon, QC, CN | QC | 48-48-23 | 073-29-18.5 | CG7 | Lac Ste. Marie, QC, CN | QC | 45-56-13.68 | 075-51-03.46 | M-125D | Lake Charles GFA, LA | LA | 30-11-04.39 | 093-10-23.41 | TM-200B | Lake City, FL ** | FL | ~ 30-10-38.80 | ~ 082-34-15.00 | TM-189B / TM-188C | Laredo, TX | TX | 27-43-33.7 | 099-26-07.8 | SM-163B | Lathrop Wells, NV | NV | 36-38-43.23 | 116-20-19.52 | P-37A | Laytonville, CA | CA | 39-41-11.04 | 123-34-56.22 | P-74A | Lemoore, CA ** | CA | Les Etroits, QC, CN | QC | P-43E / P-62B / RP-62B | Lewisville, OH | OH | 39-45-23.3 | 081-13-39.8 | P-35E | Litchfield, MN ** | MN | P-2A | Lockwood, CA | CA | 35-57-04.63 | 121-00-05.57 | P-42B | London, KY | KY | 37-09-02.90 | 083-59-29.81 | P-20F | London, ON, CN | ON | P-59B | Lone Pine, CA ** | CA | Z-210B | Long Key, FL | FL | 24-49-18.51 | 080-49-11.16 | M-95J | Lordsburg, NM ** | NM | ~ 32-18-31 | ~ 108-39-16 | P-49D | Lounsberry, NY ** | NY | SM-156C | Lovelock, NV ** | NV | 40-15-19 | 118-23-23 | CG26 | Lucknow, ON, CN | ON | 43-57-48.6 | 081-32-50.6 | P-82D | Madisonville, KY | KY | 37-21-48.8 | 087-29-48.7 | P-39A | Malibu Beach, CA ** | CA | P-34C | Manistee, MI ** | MI | CG44 | Manitouwadge, ON, CN | ON | 49-09-27 | 085-50-22.5 | SM-133A | Mankato, KS ** | KS | ~ 39-48-15 | ~ 098-13-07 | P-45A | Manorville, NY | NY | 40-51-05.44 | 072-46-02.48 | CG20 | Marathon, ON, CN | ON | 48-45-11.11 | 086-34-52.95 | P-20C | Marblehead, OH | OH | 41-32-21.30 | 082-44-26.15 | P-70D | Marquand, MO | MO | 37-27-48.68 | 090-12-37.19 | CG_ | Marten River, ON, CN | ON | P-75A | Mason, TX | TX | 30-33-45 | 099-26-50.2 | CG33 | Mattawa, ON, CN | ON | 46-22-32 | 078-45-00 | P-60E | Mazama, WA | WA | 48-44-30.0 | 120-40-49.5 | TM-187A | McCamey, TX | TX | 30-54-08.95 | 102-04-41.63 | TM-177C | McIntosh, SD | SD | 45-56-31.48 | 101-23-17.05 | P-42C / M-111G | Melvin Hill, NC | NC | 35-12-27.26 | 081-59-20.41 | P-29D / SM-132B | Middle River, MN | MN | 48-32-09.88 | 096-00-55.1 | P-30A | Middleburg, PA ** | PA | P-45C | Middletown, CT ** | CT | 41-36-38 | 072-32-10 | P-67A / P-20G | Midland, MI | MI | 43-38-03.4 | 084-25-42.1 | M-93A | Mingus Mtn., AZ | AZ | 34-42-07 | 112-07-08.8 | P-58A | Modesto, CA ** | P-31D / RP-31D | Monee, IL | IL | 41-24-35.85 | 087-45-54.30 | P-30D | Montrose, PA ** | PA | P-53B | Mooresville, IN ** | IN | P-76E | Moreno, CA | CA | 33-52-26.75 | 117-11-29.80 | P-14A / P-10D / P-13C | Moultonboro, NH ** | NH | ~ 43-45-41.4 | ~ 071-18-42.0 | P-11C / SM-151D | Moyie Springs, ID | ID | 48-44-50.8 | 116-12-19.0 | CG21 / C-5C / P-80E | Mt. Carleton, NB, CN | NB | ~47-22-41 | ~066-52-34 | Mt. Carleton, QC, CN | QC | M-115A | Myrtle Beach, SC | SC | 33-46-11.13 | 078-47-19.06 | Z-210A | Naples, FL | FL | 26-09-16.3 | 081-46-07.0 | P-53A / P-70F | Neoga, IL | IL | 39-20-15.5 | 088-23-48.0 | New Carrying Place, ME ** | ME | P-2B | New Cuyama, CA ** | CA | TM-196A / M-126A | New Orleans, LA | LA | 30-01-40.55 | 090-02-56.60 | P-50A | New Preston, CT | CT | 41-43-37.2 | 73-21-11.3 | P-50E | New Salem, MA | MA | 42-30-37.5 | 072-21-13.5 | New Yarmouth, NS, CN | NS | 45-22-07.27 | 064-50-48.41 | P-28B | Newton, ND ** | ND | CG2 | Nicolet, QC, CN | QC | 46-08-22.33 | 072-39-28.10 | P-28A | Niobe, ND | ND | 48-38-34.7 | 102-18-15.9 | CG16 / P-69E | Nipigon, ON, CN | ON | 49-01-20.57 | 088-26-24.51 | CG32 | Nishkotea Lake, QC, CN | QC | ~47-00-41 | ~077-07-02 | CG1 | Nobel, ON, CN | ON | 45-25-28 | 080-05-39 | TM-192C | Normangee, TX | TX | 30-59-33.5 | 096-06-53.0 | P-35B | Northfield, MN | MN | 44-25-14.17 | 093-11-05 | P-60B | Northport, WA | WA | 48-54-31.84 | 117-52-09.72 | P-19A | Norway, MI | MI | 45-47-23.1 | 087-52-13.7 | SM-159A | Norwood, GA ** | GA | 33-29-04.90 | 082-47-46.02 | SM-164C | Oasis, CA ** | CA | CG10 / M-119D | Oba, ON, CN | ON | 48-58-50.5 | 083-56-41.5 | P-82A | Odon, IN | IN | 38-52-19.5 | 086-59-46.0 | P-60D / P-40C | Okanogan, WA | WA | 48-31-41.2 | 119-56-33.4 | M-90A | Orla, TX | TX | 31-50-52.3 | 104-32-10.0 | P-58B | Oroville, CA ** | CA | ~ 39-28-55 | ~ 121-37-31.4 | P-49B | Oswegatchie, NY | NY | 44-10-00.9 | 075-07-06 | P-77A | Ottawa, OK | OK | 36-51-36.9 | 094-47-06.2 | P-82B / P-43C | Owingsville, KY | KY | 38-11-29.7 | 083-49-00.0 | P-16A | Painesdale, MI | MI | 47-02-11.6 | 088-41-43.5 | TM-191B | Palacios, TX | TX | 28-41-24.78 | 096-14-50.05 | RP-63C | Palermo GFA, NJ | NJ | 39-13-24.78 | 74-41-14.88 | SM-162D | Palo Verde, CA | CA | 33-17-51.40 | 114-44-27.58 | M-112A / M-113C | Parris Island MCAS, SC | SC | 32-19-42 | 080-42-20.5 | P-73B | Paulding, OH ** | OH | SM-147A | Pendroy, MT ** | MT | TM-200A | Perry, FL | FL | 30-04-41.28 | 083-34-47.74 | P-34A | Petoskey, MI | MI | 45-19-37.05 | 084-53-03.45 | P-63B, P-21D | Philipsburg, PA ** | PA | M-100B | Philomath, OR | OR | 44-30-15.50 | 123-33-09.85 | M-111C | Piedmont, AL ** | AL | P-17F | Pierz, MN ** | MN | SM-143B | Piggott, AR ** | AR | P-12C | Placer, OR | OR | 42-41-30.83 | 123-13-48.62 | P-85B | Pleasantview, IL ** | IL | Port Neuf, QC, CN | QC | P-12A | Port Orford, OR | OR | 42-44-13.6 | 124-30-35.8 | M-112D | Portal, GA ** | GA | P-11A / SM-151C | Porthill, ID | ID | 48-59-35.38 | 116-28-50.78 | M-128D / SM-162I | Poston, AZ | AZ | 33-59-36.1 | 114-24-25.6 | M-127A | Quinn River Crossing, NV | NV | 41-27-56.12 | 118-17-00.47 | CG_ | Rapides des Joachims, QC, CN | QC | Redditt, ON, CN | ON | M-99C | Redfield, SD ** | SD | P-77C | Reece, KS ** | KS | P-28D | Regan, ND | ND | 47-06-03.9 | 100-32-17.6 | P-21D | Richardsville, PA ** | PA | P-67B / P-73J | Richland Center, IN | IN | 41-07-04.35 | 086-14-27.35 | P-73F | Ridgeville Center, OH ** | OH | TM-191A | Riviera, TX | TX | 27-19-37.8 | 097-44-35.8 | P-34F | Roscommon, MI ** | MI | 44-29-38 | 084-39-41.5 | M-121A / P-56D | Roxbury, VA ** | VA | CG42 / P-80F | Saint Adalbert, QC, CN | QC | 46-50-10 | 069-54-22 | SM-143A | Salem, AR ** | AR | M-94B | San Antonio, NM ** | NM | P-76B | San Ysidro, CA | CA | 32-33-42.12 | 117-02-06.60 | M-90B | Santa Rosa, NM | NM | 34-51-39.4 | 104-45-24.6 | P-67C / P-34G | Saugatuck, MI | MI | 42-39-40.49 | 086-12-32.74 | P-77B | Savonburg, KS ** | KS | TM-192B | Schulenburg, TX | TX | 29-45-42.8 | 096-55-51.2 | CG6 | Scotch Settlement, NB, CN | NB | 45-43-19.5 | 65-46-24.5 | M-128B | Searchlight, NV ** | NV | P-13A / P-65B | Sedgwick, ME | ME | 44-18-50.6 | 068-38-22.2 | M-92A | Sells, AZ | AZ | 32-06-44 | 112-04-29 | P-59A | Shafter, CA | CA | 35-30-08.95 | 119-11-52.85 | P-67D / P-34B | Shelby, MI | MI | 43-35-59.15 | 086-20-25.3 | CG21 | Shemogue, NB, CN | NB | 46-05-35.7 | 064-16-49.4 | P-29A | Sheyenne, ND | ND | 47-49-40.40 | 099-23-53.95 | P-85C | Sibley, IL ** | IL | M-89E | Sidney, TX | TX | 31-54-41.7 | 098-42-07.1 | M-90B / M-95F | Sierra Blanca, TX | TX | 31-41-52.55 | 105-22-57.12 | Silver Falls, ON, CN | ON | M-89D / P-78A | Southbend, TX ** | TX | CG25 / P-20E | Sparta, ON, CN | ON | 42-43-15.83 | 081-06-17.78 | P-35D or F | Sparta, WI ** | WI | N-27B | Spotted Island AS, NL, CN | NL | 53-30-59.9 | 055-44-57.7 | Springton, PE, CN | PE | CG36 / P-80G | Squatteck, QC, CN | QC | 47-55-25 | 068-33-00 | St. Charles de-Bellechasse, QC, CN | QC | ~46-49-10 | ~070-55-57 | St. Cleophas, QC, CN | QC | CG4 / M-102B | St. Joseph, NS, CN | NS | 44-15-48.6 | 066-06-56 | M-112B | St. Simons Island, GA ** | GA | M-113A | Stateburg, SC | SC | 33-56-36.9 | 080-31-20.0 | Ste. Cecile Stn., QC, CN | QC | ~45-41-19 | ~070-58-10 | P-73B | Stillwell, OH ** | OH | P-50D | Stoddard, NH ** | NH | ~ 43-05-32 | ~ 072-07-56 | SM-162C | Stone Cabin, AZ | AZ | 33-14-23.4 | 114-15-26.5 | CG24 / P-21E | Stoney Creek, ON, CN | ON | 43-10-16.1 | 079-44-09.7 | CG30 | Summerville Centre, NS, CN | NS | 43-58-45 | 064-50-25 | TM-195A | Summit, MS | MS | 31-17-28.7 | 090-27-29.5 | P-49A | Suttons Corner, NY | NY | 43-21-17.35 | 076-17-09.10 | P-24C | Sweetgrass, MT | MT | 48-58-49.35 | 111-57-43.32 | SM-162A | Tacna, AZ | AZ | 32-41-01.2 | 114-03-08 | CG38 | Taschereau, QC, CN | QC | 48-43-12 | 078-42-25 | P-76A | Tecate, CA | CA | 32-34-45.40 | 116-41-19.97 | P-56A | Temperanceville, VA | VA | 37-51-37.69 | 075-33-28.63 | P-55F / RP-62G | Thomas, WV | WV | 39-08-51.87 | 079-34-14.79 | P-62A / RP-62A | Thompson, OH | OH | 41-41-09.6 | 081-02-36.6 | P-76C | Tierra del Sol, CA | CA | 32-38-50.58 | 116-19-02.91 | CG14 | Timmins, ON, CN | ON | 48-32-12 | 081-32-30 | M-91C | Tinsman, AR ** | AR | CG3 | Tobermory, ON, CN | ON | 45-13-28 | 081-38-18 | CG13 | Todd Mountain, NB, CN | NB | 46-32-31 | 066-42-05.7 | M-128C / SM-162H | Topock, AZ | AZ | 34-43-20.61 | 114-15-09.13 | P-65A | Topsfield, ME | ME | 45-23-19.23 | 067-47-47.46 | P-30B | Topton, PA ** | PA | P-30J | Trumbull Corners, NY ** | NY | 42-23-11 ? | 076-40-08 ? | M-95E | Truth or Consequence, NM ** | NM | P-17C | Twin Valley, MN ** | MN | P-19B | Two Creeks, WI | WI | 44-19-25.05 | 087-34-46.70 | P-30E | Ulysses, PA | PA | 41-52-49.15 | 077-42-51.16 | M-127B | Unionville, NV | NV | 40-33-45.1 | 118-03-08.0 | P-73A | Upland, IN ** | IN | P-69B | Upson, WI | WI | 46-25-10.1 | 090-23-06.2 | P-29C | Valley City, ND | ND | 46-50-52.5 | 098-03-09.7 | P-79B | Van Vleck, TX | TX | 29-00-13.25 | 095-53-39.65 | P-68C | Versailles, MO ** | MO | P-70C | Vichy, MO | MO | 38-08-07.93 | 091-46-24.04 | M-128A | Vidal Junction, CA ** | CA | P-20D | Vienna, ON, CN ** | CN | P-71A | Virginia, NE ** | NE | SM-150A | Waha, ID | ID | 46-17-30.30 | 116-53-01.28 | P-85A | Walnut, IL ** | IL | P-73G | Warsaw, OH ** | OH | P-28C | Washburn, ND ** | ND | P-64A / P-81E | Washington, IA | IA | 41-16-16.4 | 091-44-40.2 | M-100A | Washougal, WA | WA | 45-43-01.16 | 122-17-45.02 | TM-194A / M-125C | Weeks Island, LA | LA | 29-48-34.48 | 091-48-22.06 | P-40B | Wenatchee, WA | WA | 47-30-31.40 | 120-14-24.66 | P-10A | Westboro, MA | MA | 42-14-23.14 | 071-37-41.2 | M-99B | Westfield, ND ** | ND | CG18 | Westport, ON, CN | ON | 44-44-01.3 | 076-25-18.2 | CG35 / P-69F | Whitefish Lake, ON, CN | ON | 48-09-40 | 089-56-48 | CG40 / P-80E | Whites Brook, NB, CN | NB | 47-41-46.90 | 067-11-16.48 | P-27A, P-26D | Whitetail, MT | MT | 48-55-46.05 | 105-15-00.25 | P-26A | Whitewater, MT | MT | 48-48-04.6 | 107-32-00.7 | SM-157B | Whitmore, CA | CA | 40-44-32.19 | 121-47-23.69 | SM-163D | Wildrose Station, CA ** | CA | P-1A | Wiley City, WA ** | WA | RP-31F | Williams Bay, WI | WI | 42-36-57.54 | 088-32-25.47 | P-47B | Wilsey, KS | KS | 38-40-0.62 | 096-44-09.88 | P-77D | Winfield, KS | KS | 37-12-47.77 | 096-57-00.47 | M-129A | Winter Garden, FL | FL | 28-29-24.15 | 081-30-29.53 | SM-151E / TM-179B | Yaak, MT | MT | 48-51-44.7 | 115-43-19.2 | TM-180A | Yreka, CA | CA | 41-44-17.97 | 122-46-36.15 | M-94B | Zuni, NM | NM | 34-58-41.4 | 108-49-47.2 |
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