Hoosac Tunnel: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Article thoroughly revised. | Mar 18, 2026 | ||
| Added cross-references throughout. | Oct 01, 2021 | ||
| Invalidated site: American Society of Civil Engineers - Hoosac Tunnel. | May 01, 2017 | ||
| Add new Web site: Public Broadcasting Service - Hoosac Tunnel. | Feb 22, 2012 | ||
| Add new Web site: American Society of Civil Engineers - Hoosac Tunnel. | Feb 22, 2012 | ||
| Media added. | Sep 12, 2008 | ||
| Article revised. | Feb 08, 1999 | ||
| Article added to new online database. | Jul 20, 1998 |
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