| https://www.openhistoricalmap.org/copyright | https://www.openhistoricalmap.org |
| OpenHistoricalMap is dedicated to the public domain except where otherwise noted. | |
Added changes to U.S. time zone boundaries from 1922 to 1930
| source | https://books.google.com/books?id=J-DqFzhf1gkC&pg=PA568 |
|---|---|
| source:1 | https://historical1-stg.arcgis.com/arcgis/rest/services/USGS_Historical_Topographic_Maps/ImageServer/ |
Ur gartenn eus ar bed eo OprenStreetMap, krouet gant tud eveldoc'h ha frank hec'h implij dindan un aotre-implij digor.
OpenHistoricalMap is a charter project of OpenStreetMap U.S., a 501(c)(3) nonprofit organization affiliated with the OpenStreetMap Foundation. Technical development is supported by GreenInfo Network and Development Seed.
| https://www.openhistoricalmap.org/copyright | https://www.openhistoricalmap.org |
| OpenHistoricalMap is dedicated to the public domain except where otherwise noted. | |