For postcards, there is also a generic white one featuring a woman by the pool. I'm not sure about the date but I did find the same one from another Holiday Inn that has a postmark on it from the 1960s. I think there is a chance your unpostmarked one was produced in the 1960s but still trying to confirm.
For matchbooks, there is a black one featuring a sign--it looks just like the generic postcard you pictured. The back mentions something about a computer, so likely from after Mantle's involvement. The white Holiday Feeling one was the one I was speculating about--haven't seen one but assumed it existed. I need one if you ever come across one--they are likely way after Mantle's involvement but I'm a completionist and they are never more than a couple dollars. I don't think I've seen the brown or beige but will have to keep an eye out for them.
It's an awesome collection.
|