Banks-Maxwell Propellers
Banks-Maxwell was a manufacturer of very few wooden airplane props. To my knowledge neither design number nor serial number lists for Banks-Maxwell airplane props exist. From what I can determine, they made mostly small props used only on target drones. They also made airboat and snow sleigh props as shown by the scan below of an undated product brochure.

Copyright 2012 - All Rights Reserved
This scan is from Volume VI, Aircraft Listing and Aircraft and Propeller Listing, US DOT, 1983.  While it lists the drawing number of certificated Banks Maxwell aircraft propellers, it does not specify their aircraft or engine usage.

(Click to enlarge.)