When the police officer is chasing The Three Stooges down a sidewalk, the "HOLLYWOODLAND" sign (abbreviated to "HOLLYWOOD" in 1949) is clearly visible in the background.
When they stop the policeman in front of the news stand, among the magazines
on offer are several copies of TIME, it being the 14 November 1938 issue.
Production number 444.
Adjusted for inflation that $50 needed to join the Duck Club in 1939 would be over $1000 in 2023.