Morrow traveled the country extensively as a reporter for the Communist Party literary-artistic monthly, "The New Masses" and for its daily newspaper, "The Daily Worker," making use of the pseudonym "George Cooper." His journalism was later collected into book form and translated into Russian for publication in the Soviet Union in 1933 as "Life in the United States in this Depression." He also taught courses on American history at the CPUSA's New York party training school, served as a member of the party's speakers' bureau, and assisted Joseph Freeman with editorial tasks at "The New Masses."