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Glass Negative 5x7

00-1432.N

Cactus casts

[Unknown, David E. Shrader]

Glass Negative 5x7

00-2008.N

Garden of the Gods (west of …

[Albert C. Rogers, David E.

Glass Negative 5x7

00-2017.N

Worker digging fossils at Yu …

[Albert C. Rogers, David E.