I know this is an older thread, but I had to respond.
I worked at Magnolias in the summer of '69.I was 18. Cooking, prepping, counter and delivery. We weren't gay, as that usenet article alludes to.
It really was a lot of fun. Delivery tips were very interesting. The Hell's Angels were not.
Barney's Montana Banana and the Pineapple Pussy were the menu highlights. Chili was just OK. The restaurant was open until 4 AM.