1. Reconnaissance map of Ruby district, Alaska / U.S. Geoogical Survey; Alfred H. Brooks, geologist in Creator: Geological Survey (U.S.) Published / Created: 1921 Call Number: 848 R82 1921 Container / Volume: BRBL_00634 Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Reconnaissance map of Ruby district, Alaska / U.S. Geoogical Survey; Alfred H. Brooks, geologist in charge of division.