This image is from a 1950s ad for Cervezas Modela - "Modelo Beers." The ad is very similar in feel to some of the '50s Coca-Cola ads, but with sombrero and serape. I found it on a greeting card.
The card stock was a bit thin for covers, so I glued it to another piece of card stock for extra body. The concertina (accordion) pages are pink bond paper, cut to shape and glued to length. They page block is then glued to the covers.
A simple book, but I think it's fun.