School of African and Oriental Languages
I have to run but will put in more references later today that document the multiple languages he took in tandem with being self taught language scholar. He did not just study Swahili at the school. Remember many institutions erased his achievements or distanced themselves from him. Duberman, Nollen, Robeson, Jr. are better sources to go to than websites that are maintained by web people pasting stuff up, not historians. Talk/Stalk