| A.G. Emery Holyoke Silver Lead Mine, Marquette, Mi. [Lake Superior Views] 1864-1870 Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-ppmsca-10489 (digital file from original stereograph, front) LC-DIG-ppmsca-10490 (digital file from original stereograph, back) LL/108717
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