Image: Kerber-Jacobs quarry
Kerber-Jacobs_quarry.jpg (474 × 359 pixels, file size: 146 KB, MIME type: image/jpeg)
Description: Workers with a large block of Jacobsville Sandstone at a quarry of the Kerber-Jacobs Redstone Company at Portage Entry, Michigan. First published in State of Michigan: Mines and Mineral Statistics for 1897, page 79.
Title: Kerber-Jacobs quarry
Credit: http://digarch.lib.mtu.edu/showbib.aspx?bib_id=679687#, from the Keweenaw Digital Archives of the Michigan Tech Archives
Author: Adolph Isler
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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