In 1990, the Communist Party within the Soviet Union admitted its fear of the NTS and other groups working with Western security agencies in preparation for the collapse of the Soviet government: JPRS Report -- Soviet Union Political Affairs, 1/9/90, pp. 16-17.De Mohrenschildt's father was Russian, of German and Swedish descent, and was a marshal of nobility of the Minsk province...: Warren Commission testimony of George de Mohrenschildt, Volume 9, pages 168-169.
The Bolsheviks ran the family off their Russian home, and they were forced to move to Poland and consolidate their land holdings: Nancy Wertz, "George de Mohrenschildt, Who Are You?", The Fourth Decade, Volume 5, Issue 5, July 1998.
One story is that de Mohrenschildt's father was killed by the Bolsheviks: Statement of Igor Pantoroff, an NYC portrait artist, who knew de Mohrenschildt since the early 40s. See report of SA James Morrissey, 2/28/64, p. 18, Reel 5, Folder M -- George de Mohrenschildt, NARA Record Number: 1994.04.25.14:02:25:940005.
Another story is that his father was arrested, but escaped: Statement of Igor Voshinin. See memo of SA James K. Fresney, 3/12/64, Reel 5, Folder M -- George de Mohrenschildt, NARA Record Number: 1994.04.25.14:02:25:940005.De Mohrenschildt observed that "most of the colony in Dallas is more emotionally involved in Russian affairs then we are...So to me it does not mean very much." Warren Commission Hearings, Testimony of George de Mohrenschildt, Volume 9, p. 266.
De Mohrenschildt had an extremely deep background with the intelligence community, going back for more than twenty years: A good source on his background is Nancy Wertz, "George de Mohrenschildt, Who Are You?", Fourth Decade, Volume 5, No. 5, p. 8, July 1998.
His handler appears to have been Thomas Schreyer, identified as "the acting chief" of the IO Division back in 1956...: 7/6/56 memo from Thomas Schreyer to DCI, HSCA Segregated CIA Collection, Box 14 /NARA Record Number: 1993.07.14.17:33:14:000480.
Schreyer also signed the Fitness Reports during the sixties era for E. Howard Hunt, who was a key contact for the Cuban exiles: 12/20/73 memo by DDO, HSCA
Segregated CIA Collection, Box 37 / NARA Record Number:
It is curious Hunt advanced so far in the agency, as he was
described as "unstable" to CIA security officer Robert Bannerman as early as 1949.
In April 1963, C. Frank Stone at the Domestic Operations Division asked for traces on de Mohrenschildt. Background information was provided, and Schreyer's name was provided as the source for any follow-up: 5/9/63, Response to Request for Traces by REDACTED. Russ Holmes Work File /NARA Record Number: 104-10436-10014.
The CIA admitted before the assassination that de Mohrenschildt was "of interest" to them: Memo by Richard Helms to Warren Commission counsel J. Lee Rankin, 6/3/64, HSCA Segregated CIA Collection, Box 62 / NARA Record Number: 1993.08.06.15:03:12:400028.
His brother Dimitri von Mohrenschildt, described by the CIA as being "employed in a confidential capacity by the U.S.government": Memo, "#775 Subject was Investigated by Federal Agencies", p. 2, HSCA Segregated CIA Collection, Box 41 / NARA Record Number: 104-10112-10454.
He is said to have been one of the founders of Radio Free Europe and Radio Liberty: AllExperts website: http://en.allexperts.com/e/g/ge/george_de_mohrenschildt.htm . Also see Joseph Trento, The Secret History of the CIA.
This CIA bio of George states that "Dimitri is stated to be employed in a confidential capacity by the U.S.Government." Memo, "#775 Subject was Investigated by Federal Agencies", p. 2, HSCA Segregated CIA Collection, Box 41 / NARA Record Number: 104-10112-10454.Records indicate that Dimitri was approved to work with the OSS and that he provided intelligence services for the CIA in the 1950s: Biographic information on George De Mohrenschildt, 12/21/67, HSCA Segregated CIA Collection, Box 41 / NARA Record Number: 104-10112-10442.
Here's a 1968 CIA document looking at using Dimitri at that late date as a source: 11/1/68,
Interoffice Memorandum, HSCA
Segregated CIA Collection (microfilm - reel 5: Conte - De Mohrenschildt) / NARA Record