1. Chart of St. Clair Flats showing the positions of light house & beacon : now in course of erection Creator: United States. Army. Corps of Topographical Engineers Published / Created: [1858] Call Number: 811 Sa22 1858 Container / Volume: BRBL_00553 Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Chart of St. Clair Flats showing the positions of light house & beacon : now in course of erection and the channel excavated in 1857 & 1858 under the direction of Capt. A.W. Whipple, Corps of Topl. Engineers : the new channel was surveyed on the 6th & 7th