This remarkable real photo postcard captures a dramatic night view of the Grand Coulee Dam during its monumental construction phase in 1939. The image showcases the massive scale of the engineering feat, with the dam structure and surrounding temporary scaffolding brilliantly illuminated against the dark sky. The intricate network of lights highlights the intense activity and the industrial grandeur of this iconic American project, making it a compelling piece for collectors of historical photography and infrastructure development.

The photograph, a true Real Photo Postcard (RPPC), offers a vivid, high-contrast black and white depiction of the dam's progress, with water visibly flowing over a portion of the structure. The handwritten inscription on the front, "S-56. B-5-39. Night view across Grand Coulee Dam," provides a precise date and context for this significant moment in history. This vintage postcard is a unique artifact, preserving a visual record of an engineering marvel and the era in which it was built, appealing to enthusiasts of Washington State history, dams, and vintage construction imagery.