On sale date as given in the copyright application as listed in the Catalog of Copyright Entries, Periodicals, 1968, page 59, registration number B463904.
Cap's face appears to be a stat of a Kirby/Sinnott face. Info per Nick Caputo, August 2012.
story continues from Tales of Suspense (Marvel, 1959 series) #99.
Letters of comment from readers Danny Dutelle, Deborah Tuerffs, Steve Polwort, Jim Meschwitz, D. Wayne Matthias, Ann Bausch and Jeff Stackhouse.