In 1938, they wrote a book on Mexico, published by Oxford University Press. For Eugene Dennis, they helped prepare a draft program for a Popular Front organization in Brazil that the party intended to create to concern itself with Latin America. Dennis told them that the draft "would have to be submitted to the Comintern in Moscow."
Later that year, they published a book about Mexico through Oxford University Press. They also played a role in helping Eugene Dennis prepare an initial outline for a Brazilian Popular Front organization, which was intended to concentrate on Latin American issues. Dennis advised them that the draft would need to be submitted to the Comintern in Moscow.