What subject other than the first black comedian to successfully cross over to white audiences did Shelia P. Moses write on?
Shelia P. Moses: Shelia P. Moses, is an African-American writer whose subjects include comedian Dick Gregory and The Legend of Buddy Bush. Dick Gregory:  He performed primarily to black audiences at segregated clubs until 1961, when he became the first black comedian to successfully cross over to white audiences, appearing on television and putting out comedy record albums.
The Legend of Buddy Bush