Executive Committee of the Communist International
Freed pending appeal, Katterfeld did not immediately serve time on this sentence, instead serving as Executive Secretary of the unified Communist Party of America, using the pseudonym "John Carr," from July 27 through October 15, 1921, and which time the Central Executive Committee of the CPA dispatched him to Moscow as the representative of the CPA to the Executive Committee of the Communist International. Katterfeld occupied this position from November 1921 through March 1922. He was elected by the 1st Expanded Plenum of the Executive Committee of the Communist International to the Presidium of ECCI on March 2, 1922.