ErosBlog has a vintage movie clip up right now about a 1930s brothel getting raided. That clip has a menacing moment when a pimpish dude is threating punishment for one of the girls. It made me wonder if the rest of the movie might be worth a quick look for spanking scenes. I haven’t finished that research or watched the whole movie yet, but I immediately turned up this scene of cute and playful catfighting and spanking in one of the brothel’s themed rooms:
Clip is from 1937’s Slaves In Bondage.