Definitely the last film for Lon Chaney Jr

While it's difficult to pin down the shooting schedules for any Al Adamson feature (due to the fact that it took years for many to be completed), I can now confirm that this actually was the last film for Lon Chaney Jr., whose hoarseness was the result of the throat cancer that also killed his father. Chaney's role in "Dracula vs. Frankenstein" was a mute, so that would seem to be his very last role, and Samuel M. Sherman confirmed that both Chaney and J. Carrol Naish were almost too ill to work, but were hired sight unseen through a package deal with their agent (no doubt the same as John Carradine's). Chaney's last TV appearance was in late 1969, on "THE TONIGHT SHOW," explaining that his hoarse voice was the result of growling his WOLF MAN for the kids at Halloween. His illnesses were worsened by his alcoholism, and he died in July 1973, at the age of 67. His widow Patsy carried out his dying wish to have his body donated to UCLA as an anatomical specimen (she died in 1989).