Envelope of Lincoln Highway tour from 1915 Posted on June 24, 2017 by Lincoln Highway Association Leonard Piszkiewicz of the United States Stamp Society writes about a cover from 1915 with a Lincoln Highway logo and a reference to the First “Water Wagon” Tour over the Lincoln Highway. Leonard Piszkiewicz, “Common Stamp — Extraordinary Cover.” The United States Specialist, March 2016, Vol. 87, No. 3 (Issue 1033): pp. 135–138. Republished with permission.