Aerial Photo Composite Sheets ( Pike National Forest)  1957 Horseshoe District   May 1, 1948
Aerial Photo 1957 Index Map  Humbolt Placer Plat
Aerial Photo 1938 Index MapKing Coal Mine circa 1885
Alma (Sanborn): 1886, 1896, 1902, 1910Laurette Town Plat  circa 1861
Alma Area Property Owners  1965London Mines
Alma District Topography, Geology and Mining Claims  1912Montgomery area mining claims
Alma Mining District Mineral Survey  1965    Montgomery City Town Plat 1860
Antero Reservoir  1913Montezuma to Webster Wagon Road Survey  1914
Bailey and EnvironsMt. Guyot area mining
Bailey  Highway Survey with buildings  1914North Fork Water Diversions, 1913
Bailey Original Town Plat 1878 & 1881Original Survey:  Ranges 71- 79
Bayou Salado – Gary GoodsonOrphan Boy Placer in Mosquito District 1892
Beaver-Tarryall Area Glacial    1941 Paris Mine  1934
Boreas Pass Railroad Facilities  Park County  south part
Cemeteries  1976Park County with School & Commissioner Districts 1939
Colorado 1922Park County Historical Map
Colorado Territory 1861   Pike National Forest  1942
Como Cemetery  1976Pike National Forest    1992   
Como Coal Mines - December 1939 (New)Samscamp Ditch   1921
Denver South Park and Pacific Railway    School Districts 1929
Ditches near Junction of Four Mile and South ForkSelkirk Tank Railroad Facilities
DredgeSouth Park
Dudley Town Plat  1876South Park -1875
East Leadville Town Plat   1879South Park SW & SE Geology maps 
Fairplay (Sanborn):  1886, 1890, 1896, 1902 South Park and Park County Historic Sites
Fairplay 1951State Roads - Fairplay Southeast to West of Hartsel 1917*
Fairplay  1951  revised 1982State Roads - Hilltop to Gilley’s Ranch (Trout Creek Pass to Southwest of Wilkerson Pass)   1917*
Forest Reserves: Pikes Peak, Plum Creek and South Platte  1898State Roads - Hoosier Pass to Bonnells Crossing (Hoosier Pass to south of Fairplay)  1914*
Freshwater (Guffey) Town Plat  1896State Roads - Nelson’s Lower Ranch to Singleton highways (south of Fairplay to Singleton)  1914*
Hartsel Anticline Geology   1934State Roads - Singleton East to County Line  1917*
Highway  1936Tarryall Reservoir (Proposed) Near Lake George 1893
Highways  1952   Tarryall Road (Lake George to Jefferson)   1917
Historic Park County Ranches   U. S. Relief
Horseshoe Town Plat 1881Water District 23  Irrigation Division No. 1  Colorado  1913  
Horseshoe – Skyline Highway Toll Road  1939

PCLHA maintains a collection of topographic maps that are also available online.