Taken from caption of photo: <i>" Carlson's mail truck 19." Sign on top of building reads [?] Lake. The sign on front of the two-story log building reads <a href="https://en.wikipedia.org/wiki/Alaska_Road_Commission" class="extiw" title="w:Alaska Road Commission">Alaska Road Commission</a>. The mail truck is a <a href="https://en.wikipedia.org/wiki/tracked_vehicle" class="extiw" title="w:tracked vehicle">tracked vehicle</a>. Possibly Kenny Lake, possibly 1919 [no: truck is a later model; "19" may have been a false start at dating the image] . Original photograph size: 2 3/4" x 4 1/2". "</i> (note the vehicle technically is a <a href="https://en.wikipedia.org/wiki/half-track" class="extiw" title="w:half-track">half-track</a>)
Unknown, but taken from the collection "George B. Nelson (1889-1980). Papers, 1908-1979. UAA-HMC-0187" at the <a href="https://en.wikipedia.org/wiki/University_of_Alaska_Anchorage" class="extiw" title="w:University of Alaska Anchorage">University of Alaska Anchorage</a>
1919
Alaska's Digital Archives <a rel="nofollow" class="external autonumber" href="http://vilda.alaska.edu/">[1]</a> current reference <a rel="nofollow" class="external autonumber" href="http://vilda.alaska.edu/u?/cdmg13,700">[2]</a>