<Tr> <Th> Known for </Th> <Td> <Ul> <Li> The Souls of Black Folk </Li> <Li> Black Reconstruction in America </Li> <Li> The Crisis </Li> </Ul> </Td> </Tr> <Ul> <Li> The Souls of Black Folk </Li> <Li> Black Reconstruction in America </Li> <Li> The Crisis </Li> </Ul> <Li> The Souls of Black Folk </Li> <Li> Black Reconstruction in America </Li>

What is the most widely recognized formal african american organization in america