Title
Boulder County Mine
Date Issued
1942
County
Boulder
Identifier
mesc_miningMaps_43318700.jpg
Title
Bureau of mines trenches and drill holes near Rambler Shaft
Date Issued
Undated
County
Boulder
Identifier
43356501.tif
Title
Cold Spring and Orange Blossom
County
Boulder
Identifier
43377200.tif
|