Two draft reports dated 2 April 1954 of polygraph screening examinations conducted in March 1954 as part of operation PBSUCCESS, a CIA covert operation to overthrow the government of president Jacobo Arbenz Guzman in Guatemala, were declassified (with redactions) this year. The reports, grouped together under the title, "LCFLUTTER - Rough Draft Reports of George E. Filbing," help document the CIA's early reliance on the polygraph and may be downloaded as a single 325 kb PDF file here:

http://antipolygraph.org/documents/lcflutter-02-04-1954.pdf

LCFLUTTER is a cryptonym for "polygraph." The cryptonym LINCOLN used in this document refers to headquarters in Florida. "George E. Filbing" seems likely to be a cover name.

Some additional information on the use of polygraphs in operation PBSUCCESS may be found by searching the CIA's Electronic Reading Room for keywords such as "polygraph" and "LCFLUTTER":

http://www.foia.cia.gov/default.asp

Additional information is also available by searching the State Department's on-line collection of documents on relations with Guatemala from 1952-1954:

http://www.state.gov/r/pa/ho/frus/ike/guat/