The United States Geological Survey, in cooperation with individual states, surveyed a large portion of the United States in the early part of the 20th Century. From these surveys, a set of 15 minute topographic quadrangles were published (and reprinted but in most cases not updated.) USGS now has most historic topos available for free download and ESRI has created a viewing interface and a story map introduction NETROnline's HistoricAerials.com site has loaded these topos onto their site, georeferenced with their historic aerials. Texas A&M University has 227 folios available for download as pdf, jpg or tiff files. This list of older sources is included for historial purposes, but most USGS topographic map editions are available at the above links. MapTech (now MyTopo) hosts 15' historic topos at historical.mytopo.com as 200dpi jpegs. This volunteer project has completed the Northeastern United States (including Ohio primarly scan by myself). It includes topos not yet included in the USGS Historic Topo scanning project. This project was originally hosted on the University of New Hampshire Diamond Library web site at docs.unh.edu/nhtopos/nhtopos.htm. New England and New York maps are still available there in jpeg format. Northeast Ohio maps are on this web site in DjVu format at railsandtrails.com/usgs1900/oh/. The 1950's era 7.5 minute topos are also available. The University of Alabama has a large collection of historic topo maps online at alabamamaps.ua.edu/historicalmaps. The topo map link is at the top of the "Individual States" index page. Ohio Pennsylvania. They have many other maps types as well. 48 large scale topographic maps of Cincinnati in 1912 are available from the Office of Coast Survey, National Oceanic and Atmospheric Administration Historic Maps and Navigation Charts Site. Search the image catalog for Cincinnati. David Rumsey's online historic map collection includes a few topographic maps at www.davidrumsey.com The Perry-Castañeda Library
maintains a list of Historic Map web sites at www.lib.utexas.edu/maps/map_sites/hist_sites.html California maps (San Francisco Area) are on the UC Berkeley Library web site at sunsite.berkeley.edu/histopo/ A list of California maps (none online) is at www.lapl.org/guides/ca-topos.html Nevada and selected maps from surrounding states at keck.library.unr.edu/data/historic_topos/detail_list.htm Sample topographic maps of Buffalo, NY at ublib.buffalo.edu/libraries/units/sel/collections/maps/maps/histmapbuff.html The 1933 Report on the Ohio Topographic Survey included information on how the survey was completed. A scan of this section is available in DjVu format. GeoPDF PA 15': Allentown 1894 1939 1957 West 1902 1942 1957 page updated 08/11/12 |