This, of course, is an ad for Houdini's full evening show, which he launched in August 1925 and played until his death in October 1926. The show was more typically advertised as "3 Shows in One: Magic, Escapes, Fraud Mediums Exposed." This ad announces his move from the Shubert Theater on 44th St. to the National on 41st. Street.
Thank you "Harry".