44. Plan on pink vellum, signed by H. Poelzig and Zwegenthal. (by Henry) Collection: Images from the Rare Book and Manuscript Collections Format: Image
45. [Genesee River Viaduct] River at Portage, NY, Buffalo and New York City Railroad Collection: Images from the Rare Book and Manuscript Collections Date: 1852 Format: Image
46. [Ohio River Bridge, Henderson, kentucky] General design Collection: Images from the Rare Book and Manuscript Collections Format: Image
50. Loki Tied Collection: Images from the Rare Book and Manuscript Collections Date: 1864 Format: Image