lot of mid-century vintage Mexico tour and travel guides w/litho covers

Lot of four vintage Mexican travel and vacation guide booklets with colored lithograph covers. They are for Mexican cities or regions of Acapulco, Vera Cruz, Oaxaca and Queretaro. These have lots of great photos, but they don't have dates that we could find. We're guessing that they are from some time from the late 1940s through the 1950s.

These touring booklets measure about 5.25" x 7.75" and have about 24 to 32 pages each. These have some soil and wear.