Classic/Antique Car Repair: brake fluid reservoir, brake fluid reservoir, buick riviera

Question
I have a 51 Buick Riviera and can't seem to find the brake fluid reservoir. Can you help. Thanks

Answer
Gary, they hid it on you. Ok, Pull up the floor mat from the drivers side. There should be a rubber plug on the floor board that will need to be pried up. The master cylinder should be under that plug. On some of these older GM cars the master cylinder could be reached from under the hood. Look under the steering column and you might be able to reach it there.
Good Luck.
Brad