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This chromolithographed map, printed in 1937, offers a detailed depiction of the Mexican state of Sonora and its surrounding areas.
Created under the supervision of the Secretaría de Agricultura y Fomento’s Dirección de Geografía, Meteorología e Hidrología, it highlights the topography, major cities, towns, transportation routes (railways and roads), and natural landmarks.
The map presents Sonora’s geographical position in relation to the United States (Estados Unidos de América), with the U.S.-Mexico border prominently marked.
An inset at the lower-left corner offers additional detail on the Gulf of California (Golfo de California) and the northwestern part of the state, including its border with Baja California.
The terrain is rendered through relief shading, giving a clear sense of the mountainous regions and desert areas, such as the Gran Desierto and El Llano de Sonora.
The cartographer uses a polyconic projection.
Red lines depict key transportation routes, and annotations mark various administrative regions and settlements within Sonora.
Published by Talleres de Fotozincografía in Mexico City, this map provides an informative and visually appealing representation of the state as it existed in the late 1930s.
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