Our knowledge of the prehistory of interior Alaska is still very limited. Nearly all archaeological work in the territory has been in the Eskimo and Aleut regions. In the interior planned, systematic surveys have been conducted by Froelich Rainey, Frederica de Laguna, and Frederick Johnson, but most of these deal with relatively recent Athapascan sites. The only definitely pre-Athapascan site is the “Campus site” on the University of Alaska campus.
From time to time random specimens are found in connection with road work, farming, and mining. Artifacts discovered in the Tanana Valley muck deposits, often at great depths, suggest, but do not prove, that man was contemporaneous with mammoth and other now extinct animals of the Pleistocene. One specimen found in association with a mastodon jaw, but not actually embedded in the bone, adds to the circumstantial evidence that man was here in the late Pleistocene, if not earlier.