I hadn't heard of tea pads either until I started doing my research. In fact most of this was new information for me. This series has been one of the hardest ones I've done so far in regards to finding reliable information, but it's been a lot of fun. I spent the better part of a day just reading about weed culture in Jazz music.
RE: Fun Facts About Marijuana: Presidential Drug Dealers, Louis Armstrong, and the Mexican Revolution of 1910