The letter is written to one R. Douglas Morrison, of Monterey, California on October 10, 1934. Morrison and his wife were distant relations whom French was friendly with.
The letter concerns the recent ceremony held for the opening of French's latest project, Knickerbocker Village, a low-income planned community on the Lower East Side. One of the speakers is Al Smith, former Governor of New York, who compliments French effusively. A photographer catches the moment, and that picture is the subject of the letter.
The letter, enlarged for readability, below.
[Cordelia was French's wife.]