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Glass Negative 5x7

00-94.N

Bobwhite group

[Unknown, David E. Shrader]

Glass Negative 5x7

00-271.N

Making Plaster Casts of Rock …

[Unknown, David E. Shrader]

Glass Negative 5x7

00-287.N

Violet Green Swallow group

[Unknown, David E. Shrader]

Glass Negative 5x7

00-387.N

Making Plaster Casts of Rock …

[Unknown, David E. Shrader]

Glass Negative 5x7

00-398.N

Lewis's Woodpecker group

[Unknown, David E. Shrader]

Glass Negative 5x7

00-871.N

Old White-tailed Ptarmigan G …

[Unknown, David E. Shrader]

Glass Negative 5x7

00-1432.N

Cactus casts

[Unknown, David E. Shrader]