Du Bois probably didn't gain much recognition on the work he did for Sociology because of his involvement in the Civil Rights movement. Go had said that he had dangerous ideas, which, at the time, he did. He was very involved in different groups that protested against the discrimination that was happening at the time. This is what he was more known for. Higher officials probably didn't want give more attention to Du Bois than he already had gained, so they didn't credit him for his work in Sociology.