I just remember two other Joe photos:
1968: Barnabas attempts to give Joe poisoned medicine. Color.
1968: Joe attempts to strangle Barnabas while Mrs. Johnson tries to stop him. Color.
Those used to be exclusively part of the View Master reels, but they've since been published as photos. But even with those two, Crothers still comes up much shorter in the photo department than the majority of his fellow long-time cast members. There are seemingly dozens upon dozens of photos of Jonathan Frid, David Selby, Joan Bennett, Louis Edmonds, Grayson Hall, Alexandra Moltke, Nancy Barrett, KLS, Lara Parker, David Henesy, John Karlen, Jerry Lacy, Humbert Allen Astredo, Robert Rodan, Don Briscoe, Denise Nickerson, Thayer David, Marie Wallace, Roger Davis, Kate Jackson, James Storm, Christopher Pennock, Michael Stroka. Even Clarice Blackburn or Lisa Richards probably has more than Crothers.