lot of 1960s vintage, 35mm photo slides of Mexico, Mayan Indian ruins, Acapulco beaches

Lot of about 28 assorted vintage 35 mm photo slides, all from a single estate. These photo slides are mostly from a trip to Mexico and the Yucatan peninsula. There are shots of large Mayan and or Aztec Indian ruins, pyramids etc.. We think these ruins are Teotihuacan ("The City of the Gods"), but are not sure. There are also shots of native houses, the beaches at Acapulco etc. These slides are dated from 1965 (a few are dated 1961). They measures about 2" square over the cardboard.