https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12332113Edit ImageSaveSaveEditCropCustom TextTwo of Dutton ("Dut") Calleb's children on the back of a mule. Southern Appalachian Project near Barbourville, Knox County, Kentucky. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 911 px | 300 dpiLarge JPEG 3500 x 2657 px | 300 dpiBest Quality JPEG 13819 x 10492 px | 300 dpiTIFF 13819 x 10492 px | 300 dpi | 276.77 MBFree DownloadTwo of Dutton ("Dut") Calleb's children on the back of a mule. Southern Appalachian Project near Barbourville, Knox County, Kentucky. Sourced from the Library of Congress.More