In 1940, William Wescott Snell was a young man with a mission: to make color photography accessible for amateur photographers.
The Minneapolis man was a salesman for the Dufaycolor, an early color film promoted by a British company based on a film process invented by a Frenchman, Louis Dufay.
Snell traveled from town to town in his sales territory, which included Minnesota and the Dakotas, selling Dufaycolor film and processing to drugstores. To demonstrate "natural color film," he often took snapshots of local events. And in January 1940, he pointed his Voigtländer camera at the most colorful event that month — the St. Paul Winter Carnival parade.

Snell shot eight images, capturing elaborate floats, marchers in fanciful costumes, Winter Carnival royalty and crowds of people wearing heavy wool coats and snappy fedoras. Buildings in the background that still exist today show that in 1940, the parade traveled along Summit Avenue, up to the Minnesota State Capitol and then downtown on Cedar Street. (Today, the route is limited, traveling W. 7th Street to Rice Park in downtown St. Paul.)

Despite Snell's best intentions, Dufaycolor wasn't ultimately a success. Like dozens of other color film processes being promoted in the early 20th century, it was eventually eclipsed by the technically superior Kodachrome, according to film historian Robert Shanebrook, a former longtime Kodak employee from Rochester, N.Y.
Finding himself out of a job, Snell got into selling floor cleaning machines. He eventually moved to California, where he started his own company selling commercial cleaning supplies and machines.
"He was always a sort of a salesman for something or another," said Snell's daughter, Diane Snell Freburg.

Snell died in 1993 at the age of 86. And the photos he took of the colorful parade so long ago were forgotten until now.