1. Geological map of Lake Winnipeg and vicinity / by J.B. Tyrrell and D.B. Dowling. Creator: Tyrrell, J. B. (Joseph Burr), 1858-1957 Published / Created: 1899 Call Number: 736CA W73 1899 Container / Volume: BRBL_00382 Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Geological map of Lake Winnipeg and vicinity / by J.B. Tyrrell and D.B. Dowling.
2. Geological map of north western Manitoba and portions of the districts of Assiniboia and Creator: Tyrrell, Joseph Burr, 1858-1957 Published / Created: 1891 Call Number: 736CA 1891 Container / Volume: BRBL_00382 Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Geological map of north western Manitoba and portions of the districts of Assiniboia and Saskatchewan [cartographic material] / by J. B. Tyrrell ; assisted by D. B. Dowling.