The Walla-Walla Bing-Bang tribe is a nod to the lyrics of the 1958 song 'Witch Doctor' by Ross S. Bagdasarian, a.k.a. Davide Seville of Chipmunks fame.
Jack encounters mouse traps. That type of spring-loaded mouse trap was developed in 1894. For what it is worth, the first spring loaded leg capture traps were made in the 1600s specifically to catch men.