http://library.osu.edu/find/subjects/map-resources/
http://library.osu.edu/find/subjects/maps-ohio-historical-maps/
http://library.osu.edu/find/subjects/history-resources/primary-sources-u-s/#Ohio
http://www.ohiomemory.org/
http://geonames.usgs.gov/pls/gnispublic/f?p=115:1:2227613096462817
No comments:
Post a Comment