Like all the leaded glass in the enclave, they were created by the company Richard N. Spiers & Son. While most of that firms's work in Tudor City features heraldic imagery or designs relating to neighborhood history, most of No. 45's glass celebrates Olde New York.
Above, two additional figures that are repeated on several windows: a drummer, and a cop with a nightstick (we think). The significance of this pairing is lost on us.