He authored many works related to communism, including biographical studies of Vladimir Lenin, Joseph Stalin, Leon Trotsky, and Diego Rivera.

[1] Wolfe was also a leading member the Red International of Labor Unions (Profintern) from 1924 to 1928, sitting on that body's Executive Committee.

[2] Wolfe was ultimately deported from Mexico to the United States in July 1925 for activities related to a strike of Mexican railway workers.

[2] Upon his return to America, Wolfe took over as head of the Party's New York Workers School, located at 26 Union Square and offering 70 courses in the social sciences to some 1500 students.

[4] In that capacity, he became involved in the attempt of Jay Lovestone to maintain control of the American organization over the growing opposition of Joseph Stalin and Vyacheslav Molotov, who ultimately supported the rival faction headed by William Z.

According to Benjamin Gitlow's 1940 memoir, I Confess, Wolfe was directed by the Comintern in April 1929 to be removed from his post in Moscow and to instead accept a dangerous assignment to Korea - at the time under Japanese rule - as part of the campaign against the Lovestone group in the American Communist Party.

Initially, Lovestone and Wolfe hoped to eventually be welcomed back into the Communist movement but when changes in the Comintern's line failed to result in a rapprochement, the CP(O) moved further and further away from communism.

By 1940, the Wolfes were living in Provincetown, Massachusetts where they befriended Alfred Kazin and introduced him to Mary McCarthy and the writers of the Partisan Review.

[6] The CP(O) meanwhile moved further away from the left and went through several name changes finally becoming the Independent Labor League of America in 1938 before dissolving at the end of 1940 in part because of a break between Lovestone and Wolfe on their interpretation of World War II - with Lovestone favoring American intervention and Wolfe opposing support for what he argued was an imperialist war.

In his autobiography, "A Life in Two Centuries," Bertram wrote: "When I went to work for the Voice of America in the period from 1950 to 1954, religious leaders and believers were being framed, tortured, and sent to  concentration camps in all the countries under Communist rule in Eastern Europe.