This issue is a variant of Amazing Adventures (Marvel, 1970 series) #37 [25¢].
Indicia states this to be a June 1976 issue, while cover says July 1976. Info by MagicPilot, 2005-05-02 (Per Sandell ed.)
Letters page replies by Don McGregor. Includes letters from (and replies to) Greg Potter and Neal Blaikie and a next issue box.