Truman Ward Ingersoll was a photographer based in St. Paul, Minnesota. He specialized in manufacturing and selling photographic stereoview cards through his mail order business. He produced many images of nature, the wilderness, and outdoor sports.

The Library of Congress explains that stereograph cards “consist of two nearly identical photographs or photomechanical prints, paired to produce the illusion of a single three-dimensional image, usually when viewed through a stereoscope.”

Stereoscopic photography originated in the early nineteenth century. The process was improved and popularized in the middle of the nineteenth century, particularly after the invention of lightweight portable stereoscope viewers. Stereoscope cards remained popular collectible items through the first years of the twentieth century.