The caption sheet links East Haven Tunnel to numbered engineering photographs, showing how an archive preserves provenance.
Evidence, credit & reuse: Available at the linked repository; image or full record is not included in this download. Eight-page PDF lists CT-11-89 tunnel and CT-11-90 ventilating shaft. Separate shaft-photo page/direct image not verified. Select document page only after visual inspection. Reuse: government survey documentation; copied-material exception; HAER advisory: no known restrictions on government-created images; copied material may be restricted.
Source: Historic American Engineering Record / Library of Congress
Cite this item
Silent Grounds Collective, Documented Tunnels of the New Haven Region, SGC-ED086, ED-H-HT29, “Northeast Railroad Corridor, HAER CT-11 photograph captions.” Source: Historic American Engineering Record / Library of Congress. https://www.loc.gov/pictures/item/ct0338/. Research edition, accessed 2026-09-12.