Robbinsdale had its first annual Good Will Day celebration and parade in 1936. Planners included William J. Mueller, Willard Randall, Frank Hollsten, H.P. Billmyre, William Ambrose, Jess Anderson, Tom Howard, Hess Linderholm, Ivan Wagner, James Lowe and Harvey Davis. This celebration became Whiz Bang Days in 1948 and continues to this day.
Are you sure you have the right year for the change of the name from Good Will Days to Whiz Bang Days?
My mother grew up in Robbinsdale and was in the running for some princess of the city and that was the late 1950’s. Pictures of her in a car for the parade CLEARLY state Whiz Bang Days and if you just do a general search of Whiz Bang days, they say they began in 1948.