Elisabeth wrote me about a vest that was worn by Bob Nolan, a member of the singing group Sons of the Pioneers. The group appeared in over one hundred films from the 1930s through the 1950s. They played themselves, and were almost always resonsible for their own costumes unless something special was called for in a scene, such as a military uniform, etc.
Westerns of the time very frequently had actors responsible for their own costumes, and Elisabeth says that since Westerns typically only featured basic work clothes, it would be next to impossible to document the re-use of many of these costumes. However, sometimes a very specific and distinctive piece, such as this vest worn by Nolan pops up. Nolan apparently gave the vest, which was used in at least fifteen films, to a fan after he retired.