I never heard them called Oil Bath Air Filters. They were all Oil Bath Air Cleaners. My 1971 VW Bus had one as well as the 1972 Ford C850 with the %34 cubic inch gas engine that I drove at work. Oil filters were optional on many cars through the 50s. Worse than no oil filter on the 71 Bus was the fact that they didn’t have a fuel filter. Something you didn’t find out until the dealer charged you $90 to clean the carb and then tried to sell you a super duper Micronite fuel filter for $43. Instead I put in a $1 generic filter from a parts store and it worked fine.
As far as Camry cartridges go, The Toyota dealer sell them for $5.41 as Mike said and our Walmart wants $9 for a Fram.