As president of the American Mathematical Society he was the leader of American mathematics and his efforts to increase the funding for research is explained in where Feffer writes:
Nagu president Ameerika Matemaatika Selts oli ta liider Ameerika matemaatika ja tema jõupingutusi, et suurendada teadusuuringute rahastamist on selgitatud, kus Feffer kirjutab: