Pseudonym: Boysen, Henry
Hecksher also used the pseudonyms of Nelson L. Raynock and James E. Beckhoff.
Henry Hecksher also probably used the pseudonym of Graham L. Page during the late 1940's and 1950's, particularly during Operation PBSUCCESS (project to overthrow - "without bloodshed, if possible" - the Arbenz government in Guatemala in 1954).
104-10241-10184: PHOTOS OF MANUEL ARTIME BUESA ALONE AND WITH MARTIN FERRER AND HENRY BOYSEN
07/04/63, CIA document: Text under the photograph at the bottom of the document reads: "Left: Manuel Artime Buesa. Right: Henry Hecksher as Henry Boysen, Bethesda, Md." The photograph was probably on July 4, 1963 along with the other photographs.
104-10241-10101: MEMO: TELEPHONE CONVERSATION BETWEEN AMBIDDY-1 AND R. HERNANDEZ
12/24/63, Memo for the record from Raul Hernandez: ..."2. A-1 advised that he had undergone a thorough physical examination by Dr. Boyd, recommended to A-1 by Mr. Boysen (Henry Hecksher)..."
Larry Hancock, Nexus: The CIA and Political Assassination (2012), p. 62
..."Henry Hecksher (alias Nelson L. Raynock, Henry Boyson..."