Really a nice find. The "Lion 30 Stick" books are sought after for their graphic/artistic appeal, your cover is no exception. Funny thing, I just listed a bunch of CA cardroom covers on ebay nothing as rare as yours but take a look anyways!!! The Capy Rix cover is no slouch either!! And there has only been one Riverside hotel in Reno, I would date that cover in the 30's. Eric