This episode is available on the VHS Marvel Comics Video Library Volume 3 "Captain America: The Origin Of Captain America".
Other costumes seen in the window at "Stan's Costume Shop" are (from left to right): Iron Man, Black Bolt, Vision, Power Man, Phoenix, Thor and Storm.
This episode was animated by the Toei Doga animation company in Japan. Toei had previously worked with Marvel comics to produce the Japanese live-action series of Spider-Man in 1978, and a little-known Japanese TV animated feature of Dracula in 1980 based specifically on the old Marvel Tomb Of Dracula comics, approximately from issues #46-70. This episode was the first cartoon of many that they would later animate for Marvel Productions, including four episodes of Spider-Man And His Amazing Friends ("Knights And Demons," "The Origin Of The Iceman," "Along Came Spidey" & "A Fire-Star Is Born"), Dungeons & Dragons, G.I. Joe, and The Transformers.