Landgraf's artwork appeared in DC Comics publications from 1977 to 1981: The Witching Hour #85; Ghosts #68, #71 - 76, #82, #91, and #101; Weird Tales #89, and The Unexpected #202 and #216.
He illustrated comics for heavy metal bands Vikon and Thor Rock Warrior, as well as Revolutionary Comics' and a Pink Floyd comic book series.