Vintage Mining Ephemera Literature Early

Description

Group 5 booklets pertaining to mining:
Mining Tanks-Pacific Tank & Pipe Co- S.F.-1930's
Connersville Blower Co.-1919
Pacific Coast Piece List, 1930, S.F.
Better Ventilation Lower Production Costs-Metal Mine Ed-1922
American Pressed Steel Prod.- Split Pulleys-1927
Found in Central Calif. mine area