| 1. |  | Grading the levee | United States. Federal Civil Works Administration; Davenport (Iowa). Levee Improvement Commission; Crescent Bridge (Rock Island, Ill.-Davenport, Iowa); Mississippi River; Levees; Construction; Davenport (Iowa); Progress photographs; Photographic prints | Photograph depicting the progress of grading the levee on the Mississippi River at Davenport, Iowa. A large, rectangular wooden box is in the center of the photograph. Crescent Bridge is visible in the... |
