I finally found out the name of this Bob Hewes rocket thanks to the post Who the heck is Friedrich Zander? on the Rocketry Blog. Bob Hewes was a member of SEARS who passed away and his widow donated his rockets to SEARS.
Zander was a founding member of GIRD (Group for the Investigation of Reaction Propulsion) (Группа изучения реактивного движения (ГИРД)) in Moscow. The group set about attempting to construct liquid-fuelled rockets, and it was its tenth attempt (the GIRD-X) that finally flew successfully on 25 November 1933. Zander had designed the rocket, but did not live to see it fly, having died of Typhus in March of that year in the city of Kislovodsk.