File:B&EN v16 no 24 fig06 pg08 (1916-06-24) Arch Section West Portal.jpg
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_Arch_Section_West_Portal.jpg&action=edit§ion=1){kind=link}
| Description |
English: Caption: Arch Section Near West Portal in Open Cut |
| Date | |
| Source | Glick, L. (21 June 1916). "Method and Progress of Construction of the Twin Peaks Tunnel In San Francisco, Cal.". Building and Engineering News 16 (24): 5–13. Retrieved on 24 July 2018. |
| Author | Unknown illustrator(s) and/or photographer(s). |
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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| current | 15:34, 25 July 2018 | | 1,971 × 1,416 (750 KB) | Mliu92 (talk | contribs) | User created page with UploadWizard |
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