Negative # B19728: Method of Slinging Shovel and Carrying Carbon Bisulphid. [Photo showing how to properly pack prairie dog control supplies on a horse.]

Negative # B19728: Method of Slinging Shovel and Carrying Carbon Bisulphid. [Photo showing how to properly pack prairie dog control supplies on a horse.], NWRC0053.DO.00038. National Wildlife Research Center Archives. https://nwrcarchive.libraryhost.com/repositories/2/digital_objects/325 Accessed September 21, 2026.