Castle's 1961
Homicidal is said to have been made either in homage to
Psycho, made the year before, or in competition with Hitchcock (it even has a cross-dressing aspect).
Homicidal has some good, noirish location shots in Ventura (though none in L.A. that I could see), and the film appears as a film-within-a-film (on a drive-in screen) in Castle's 1962
Zotz!--which itself somehow seems to have been inspired by
The Absent-Minded Professor of the year before and which offers us some interesting then-and-nows from its location shooting in and around Occidental College:
Columbia Pictures/Sony
Google Street View
1803 Campus Road, Eagle Rock. It's great that even the classic old L.A. black-and-white "pistol" street
signs are still there.
Columbia Pictures/Sony
Google Street View
A "Beaver" house just across Ridgeview Avenue from the one in the top shot.
Columbia Pictures/Sony
Tom Poston and Jim Backus at Oxy, view toward Belle Wilbur Thorne Hall.
historichighlandpark.com
historichighlandpark.com
Belle Wilbur Thorne Hall today.