Captain America Comics #71

A messenger has interrupted his class to let him know that, after six months of healing, Bucky is ready to be picked up at the hospital. The two have a tearful reunion after which they are gassed in a cab by one of the Trickster's henchmen. He takes them to a garage because the Trickster knows he can get to Cap through Bucky and releases Steve so that he can inform the papers. Steve changes to Cap and retraces his steps back to the garage to defeat the Trickster.