Map of the conterminous United States showing routes of the principal explorers from 1501 to 1844, whose work had an important bearing on the settlement of the country and the fixing of its successive boundaries /
Wedi'i Gadw mewn:
| OCLC: | 10206285 |
|---|---|
| Prif Awdur: | |
| Awduron Corfforaethol: | , |
| Iaith: | English |
| Cyhoeddwyd: |
Reston, Va. :
U.S. Geological Survey,
1983.
|
| Pynciau: | |
| Fformat: | Dogfen y Llywodraeth Map Note that CRL will digitize material from the collection when copyright allows. |