This piece is titled Xochimilco after the Mexico City borough, and was painted around 1935. The postcard is from a series extrapolated from the book Mexican Calendar Girls: The Golden Age of Calendar Art, 1930-1960 by Angela Villalba. Distributed by small businesses, these calendars hung in every Mexican-American home. Generally printed in Mexico, their wholesome, ever-beautiful female subjects served as nostalgic reminders of old Mexico, and reflected the flowering of Mexican-American pride. Published by Chronicle Books, Villalba’s is the only book devoted to the subject, and it’s written in both English and Spanish. I’ve got to find a copy!
This one is titled Rosita La Pajarera and was created around 1940. The artist, Antonio Gómez, created a complete scene, implying Rosita is taking the birds (los pájaros) to market in the village below. Gómez was an illustrator for one of the most successful Mexican calendar girl printers, Offset Latina. Four generations later, the same family still runs the company, now called Litografia Latina. Litografia no longer prints calendars, but it is an industry leader in labels and packaging in Mexico City.