1. Official road map of South Dakota / [prepared for] Conoco Travel Bureau. Creator: H.M. Gousha Company Published / Created: [1942] Call Number: 823gmb 1942 Container / Volume: BRBL_00569 Image Count: 2 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Official road map of South Dakota / [prepared for] Conoco Travel Bureau.