This issue is a variant of Captain Marvel (Marvel, 1968 series) #45.
Letters page replies by Steve Englehart, including a synopsis of his intended plans for the following issue. Englehart left Marvel suddenly before that issue was published.
Cover credits provided 2006 by Al Milgrom. Cap and Rick Jones faces by John Romita.
Script credits from Steve Engelhart (http://www.steveenglehart.com/Comics/Captain%20Marvel%2042-46.html) 24 April 2008