Sometime prior to March 1941, Mary Price allegedly agreed to furnish Jacob Golos, controller of the secret apparatus of the Communist Party of the USA (CPUSA) on behalf of the Soviet Union, with all the information she could concerning the material Lippmann was writing and his contacts.
Among them were Maurice Halperin, Duncan Lee, Helen Tenney of the Office of Strategic Services (OSS), Robert Miller of the U.S. State Department, and Michael Greenberg, an associate of presidential aide Lauchlin Currie.
Soviet intelligence considered the Perlo group to be an extremely valuable asset, and upon the death of Golos in late 1942, sought to control Mary Price directly.
Iskhak Akhmerov, chief of the NKGB illegal station in the U.S., wanted to establish her in an apartment in the Georgetown section of Washington for the sexual entrapment of blackmail victims.
In November 1944, Anatoly Gorsky reported to Moscow that according to Elizabeth Bentley, Price had begun a sexual relationship with one of her sources, Duncan Chaplin Lee.
Price, by now retired from spying, returned to North Carolina around 1945 and organized the state chapter of a liberal group, the Southern Conference for Human Welfare.