All Gustavson credits verified and courtesy of Terry Gustafson, son of Paul Gustavson.
Last Golden Age appearance. Next appears in All-Star Comics Vol. 2 #1 (May 1999) and dies in that story.
Lance Blackwood, according to the Who's Who, is a by-line on this strip.
Credits from the Quality Companion (TwoMorrows, 2011 series) #nn (November 2011).
The U.S. general in this story resembles Commissioner Dolan in the Spirit strip.
Last appearance in National. Next seen in Bomber Comics (Gilberton, 1944 series) #1. Tracking of feature noted by Leonard Wolinsky via the GCD Errors list, February 2009.