Saltarella thinks the art is by Chuck Cuidera, definitely the pencils and probably the inks.
Reprint has the title "Adventure in Panama". Crandall art credit from Jim Amash 2012-1-5.
All Gustavson credits verified and courtesy of Terry Gustafson, son of Paul Gustavson.
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).