Yeah, I can feel the variations tugging at me too. Both Carson City Nuggets advertise the Awful-Awful Sandwich inside but only one gives away the makings and the Harrahs are two different shades so you'd have to search for other colors, right?

I think you're right about casino collectors/full books vs. matchbook collectors/covers only. The Poodle Room is a bogie but I couldn't resist the goofy thing. Also non-casino is Stockton's The Oasis,"The Friendly Little Club, Visit Our Midget Lounge". Don't know if that's related to the book from Shorty Willard's Tavern, "Across The Street From Good Old Pabst Brewery" in Peoria Heights.