Reports

The Eugene Casey tunneling collection contains documents reflecting the history of tunneling in North America and around the world. Materials include documents describing tunneling methods and construction, early subway construction photographs, the building of the 63rd Street Tunnel, over 100 photographs documenting the Hudson & Manhattan Railroad Tube, and records relating to the construction of the Holland Tunnel, including signed reports by Clifford Milburn Holland.

The Lonto-Watson collection contains albums, scrapbooks, photographs, negatives, documents, ephemera, and books related to New York City transportation such as horse cars, cable cars, trolleys, elevated railroads, and subways, as well as transportation systems domestic and foreign, and New York City architecture.