Image: North portal of Stockton Street Tunnel, December 1914

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Description: Officials inspecting the north portal of the Stockton Street Tunnel in December 1914
Title: North portal of Stockton Street Tunnel, December 1914
Credit: Originally published in Engineering News, February 18, 1915 Republished in Municipal blue book of San Francisco, 1915 Scanned book page on Flickr: https://www.flickr.com/photos/internetarchivebookimages/14801861163/
Author: Unknown authorUnknown author
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Michael O'Shaughnessy

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