Correspondence regarding Aerial Phenomena Research Organization and Civilian Saucer Investigations

This document is a letter dated April 7, 1953, from H. Marshall Chadwell to Dr. Samuel A. Goudsmit at the Brookhaven National Laboratory. The letter serves as a response to Dr. Goudsmit's inquiry dated March 25, 1953, regarding civilian organizations involved in the study of aerial phenomena. Chadwell provides information on two specific groups: the Aerial Phenomena Research Organization (APRO), led by National Director Coral Lorenzen and based in Sturgeon Bay, Wisconsin, and Civilian Saucer Investigations, which utilizes a Los Angeles post office box for correspondence. Regarding the latter, Chadwell identifies an individual named A. H. Sullivan, residing at 11067 Carson Drive, Lynwood, California, as being active in the group and notes that Sullivan was formerly employed by North American Aviation, Inc., in public relations. The letter concludes with Chadwell expressing appreciation for Dr. Goudsmit's willingness to assist with the problem on short notice and requests that he continue to be available for future consultation on a 'fire drill' basis.