Old automobiles glide beneath a cathedral canopy of mature trees on Mexico City's grandest boulevard — the Paseo de la Reforma — in this sharp real-photo postcard from the early 1940s. The wide, divided promenade stretches toward a grand Porfirian-era building visible in the misty distance, while period sedans park lazily along the shaded lateral lanes. The boulevard, originally laid out in the 1860s under Emperor Maximilian I to connect Chapultepec Castle to the city center, was already a symbol of cosmopolitan aspiration when this image was captured. The photographer, known by the stylized "Vázquez" imprint (catalog number 742), documented the avenue at a moment of relative tranquility before postwar development transformed it. The real-photo format — printed on Kodak or Velox photographic paper — gives the image exceptional tonal depth and documentary intimacy rarely achieved in lithographic postcards of the era.