Links
[1] https://web.library.yale.edu/cataloging/cartographic/csssi/alaska_topo_ser_250000
[2] https://web.library.yale.edu/cataloging/cartographic/csssi/topographic_map_ser_163360
[3] https://web.library.yale.edu/cataloging/cartographic/csssi/canada_national_topographic_system_50000
[4] https://web.library.yale.edu/cataloging/cartographic/csssi/eastern_us_2500000
[5] http://web.library.yale.edu/cartographic-cataloging/topographic-maps-csssi/western-united-states-scale-1250000
[6] https://web.library.yale.edu/cataloging/cartographic/csssi/canada_index_sheet_1000000
[7] https://web.library.yale.edu/cataloging/cartographic/csssi/canada_a_ser
[8] https://web.library.yale.edu/cataloging/cartographic/csssi/land_use_ser_250000
[9] https://web.library.yale.edu/cataloging/cartographic/csssi/western_us_250000
[10] https://web.library.yale.edu/cataloging/cartographic/csssi/us_major_cities_24000
[11] https://web.library.yale.edu/cataloging/cartographic/csssi/us_county_map_series_100000
[12] https://web.library.yale.edu/cataloging/cartographic/csssi/world_nautical_charts_svar
[13] https://web.library.yale.edu/cataloging/cartographic/csssi/Topogr_%20ubersichtskarte_des_deutschen_reiches_200000
[14] https://web.library.yale.edu/cataloging/cartographic/csssi/world_north-america_1000000