Hiya Matt, in response to your question, I'm thinking NO. The Riverside is still there on the south side of the river just across from the casino area. I gather that it's an apartment/condo(?) setup with arty pretensions. This pic (oh great, now I've got 304 items grazing in "Images"!) shows the old girl down at the end of the street just over the T-Bird. Is the tower you're referencing the building by the letter "e" in the arch sign?

So...as long as I've got images yet to post ( ) , notice that this postcard shows Harley's Silver Dollar. My guy Lincoln Fitzgerald whose Nevada Club is also shown, bought the joint and built Fitzgerald's on top of the place.