Scope and Contents: This sub-subgroup contains Commissioner Mahoney’s correspondence with city agencies, other staff in the Department, and related outside groups who worked alongside the Department. The material includes reports, publications, and statistics as well as promotional and educational material. The records in this series notably address subjects such as civil defense, narcotics abuse, fluoridation of the city’s water supply, Puerto Rican migration, the Department’s growing focus on mental hygiene, and...