1. Memorial monument to John Wesley Powell erected at Grand Canyon by the Congress of the United Creator: Powell, Arthur Davis Published / Created: n.d Call Number: WA Photos 271 Collection Title: Frederick Samuel Dellenbaugh collection of photographs and drawings of the Colorado River region. Container / Volume: Box 4 | Folder 140 Image Count: 3 Resource Type: Prints & Photographs Found in: Beinecke Rare Book and Manuscript Library > Memorial monument to John Wesley Powell erected at Grand Canyon by the Congress of the United States