1. Topographical Map of Colorado River Valley Identifier: CAC_CC_053_4_0000_1_7 Contributing Institution: Carl Albert Congressional Research and Studies Center, University of Oklahoma, Norman, OK Collection: John William "Elmer" Thomas Collection Title: Topographical Map of Colorado River Valley Date: 1921-01-01 Creator: unknown Topic: Water resources development--United States, WaterwaysUnited States Congress: 67th (1921-1923)
![["This Topographical Map, produced by the Department of the Interior, includes handwritten annotations of fault lines, canals, and tunnels, and was surveyed in 1902-1903 and 1909. Dimensions: 16 1/2 x 20."]](https://jones-2.s3.us-east-1.amazonaws.com/John%20William%20Elmer%20Thomas%20Collection%2FMaps,%20CAC_CC_053_4_0000_0000_0000%2Fthumbnails%2FCAC_CC_053_4_0000_1_7_thumbnail.jpg "Topographical Map of Colorado River Valley")