Contains annual reports, correspondence, meetings, organizational records, public relations materials, and subject files from Arena's time as president of the American Academy of Pediatrics (AAP). The Meetings, Committees, and Councils subseries contains planning information for the ad hoc, district, and advisory committees, as well as spring sessions and annual meetings for the AAP. This subseries also contains meeting minutes and agendas for executive board meetings. Internal Business Affairs folders contain newsletters and planning notes for various organizational events from 1970-1978. Subject files contain clippings, promotional information, and correspondence for projects that Arena coordinated with other organizations. Materials date from 1964 to 1992.