SF Encyclopedia Picture Gallery
Ron Goulart. The Avenger: The Iron Skull (New York: Warner Paperback Library, 1975) as by Kenneth Robeson [tie: The Avenger: pb/George Gross]
Image courtesy of Clute Science Fiction Library at Telluride
Ron Goulart. The Avenger: The Iron Skull (New York: Warner Paperback Library, 1975) as by Kenneth Robeson [tie: The Avenger: pb/George Gross]
Image courtesy of Clute Science Fiction Library at Telluride