Robert Neil Johnson

atlas (2) Californië (2) Gems (2) Gems Minerals & Rocks (2) gemstones (1) Geo-CA (1) Geologie (2) Geschiedenis (3) ghost towns (8) Gold mines and mining -- West (U.S.) -- Maps; Precious stones -- Collection and preservation -- West (U.S.) -- Maps (1) Goud (4) Goudkoorts (1) Het westen (1) Idaho (1) Kaarten (3) Main (1) Maps of where gold has been found in the United States (1) Mijnbouw (3) Mineraal (2) MLI (1) Montana (1) naslagwerk (1) Nevada (3) Non-fictie (2) Northwest U.S (1) ongelezen (1) Oregon (1) Pam (1) Prospectie (1) Reisgids (2) reisgids (1) rockhounding (2) rocks and minerals (2) Schat (1) Spookstad (1) US travel (1) Utah (3) West (3) Westelijke Verenigde Staten (4) Zuidwest (1)