Halftime stunt during 1939 Homecoming football game against California. Doug Chambers is in the beaver suit, commissioned by the Rally Squad for $10. The suit was used for at least three games in 1939 and 1940 and had a four-foot tail that was "stiff as a board." The costume is the earliest known beaver costumed used at Oregon State, though it is not considered part of Benny Beaver's lineage.
Ken Austin with his Benny Beaver costume in 1952 or 1953. The billboard is announcing the construction of Parker Stadium, today called Reser Stadium. The image first appeared in the 1953 Beaver Yearbook.