The burrow is similar to one he painted on the cover of Lone Ranger #20 note the placement of the ears. Gollub's reference material for the burrow drawings came from a year he spent in South Dakota studying the animals in Custer State Park. The wild burrows have been there for a very long time and are fondly referred to as "begging burrows" today, because they eagerly appoach vehicles in the park looking for handouts. Gollub did a year in the park making wild animal drawings for the St Louis Natural History Museum in 1935.