An Air University Library employee showcases one of the oldest books in the library’s collection, which dates back to the late 1700's, Aug. 22, 2019, on Maxwell Air Force Base, Alabama. In addition to this book, the library has a vast collection of historical research and products that they are currently digitizing, which will soon be made available to Air Force and DOD employees around the world. (U.S. Air Force photo by Airman 1st Class Charles Welty)