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Glass Negative 5x7

00-1009A.N

Microphoto of a Rock section

[David E. Shrader, David E.

Glass Negative 5x7

00-148.N

Campion Gold collection on e …

[DMNS Staff, David E. Shrade

Glass Negative 5x7

00-879.1.N

Calcite Specimen

[J.W. Jackson, David E. Shra

Glass Negative 5x7

00-879.2.N

Calcite Specimen

[J.W. Jackson, David E. Shra

Glass Negative 5x7

00-1067B.N

Specimen of native silver on …

[J. H. Little, David E. Shra

Glass Negative 5x7

00-1068B.N

Specimen of Calaverite from …

[David E. Shrader, J. H. Lit