A mammoth plate is a photographic negative plate size, usually 18 by 21 inches (53.5 x 45.7 cm.) with photographic prints made through contact printing.
Description
Inscription on recto: Spokane Falls Inscription on verso: Spokane Falls, # 62
Extent
1 photographic print approx. 38.5 x 54 cm. b&w, mammoth plates
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