found: His A short history of the mail service, 1970.
found: Harris, M. M*A*S*H, 1983 (a.e.)CIP t.p. (Carl H. Scheele, curator, Div. of Comm. Life) data sheet (b. June 19, 1928)
found: SSDI, Aug. 23, 2007(Scheele, Catl H.; b. June 19, 1928; d. Sept. 29, 1995, Arlington, Va.)
found: Information from 678 converted Dec. 15, 2014(associate curator in charge, Division of Philately and Postal History, Smithsonian Institution)
found: Washington Post website, Apr. 19, 2019(in obituary published Oct. 6, 1995: historian and curator, National Museum of American History, Smithsonian Institution; M.A. American history, Case Western Reserve University)
found: LC database, Apr. 19, 2019(hdg.: Scheele, Carl H.)