Description: Gem Mine on "The Isthmus"
Creator: Keystone View Company
Creation Date: 1915
Keywords: gem mine The Isthmus
Object ID: c100_sv_17696
Copyright: Public domain
Format: Stereoscopic real photo view card
Size: approx. 3.5 in x 7 in (8.9 cm x 17.7 cm)
Credit: David Marshall Collection, Panama-California Exposition Digital Archive
Full-size view: click here