This product is an original souvenir program from the 1940 tryout of the Broadway musical "Hold on to Your Hats," starring Al Jolson, Ruby Keeler, and Martha Raye. The program includes information about the production, the performers, and the show itself, making it a valuable collectible for fans of theater and entertainment memorabilia. This piece of history from the United States in the 1940s offers a glimpse into the world of Broadway during that time period, making it a unique and sought-after item for collectors.