If you go back to the beginning many cars and trucks had the drivers door fixed by in place, so everyone had to enter via the passenger side. I believe the right side lock was just carried over until it ended for good in the late 50's...
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD