By Lesley Parilla, Field Book Project Charles Doolittle Walcott (1850-1927), paleontologist and fourth Secretary of the Smithsonian (1907-1927), stands viewing the Grand Canyon, 1915. SIA RU000095, Box 24, Folder 3A. Image 83-14116 or 75-2248. A sizable portion of field books we’ve cataloged document field work in the US National Parks.... More...