[2] In contrast, many mid-20th-century economic historians, such as R.H. Tawney, taught that Karl Marx was the last and greatest of the Scholastic economists.
[4] This led to a number of publications, including a 1937 article in Annales d'histoire économique et sociale.
In 1936 De Roover married the American historian Florence Edler, and emigrated to the United States.
In the United States, he expanded his research to the history of the Medici Bank and to more abstract medieval economic thought.
[4] De Roover and his wife appear as minor characters in The Sinking of the Odradek Stadium, a novel by the American novelist Harry Mathews that is in part concerned with the Medici.