Pseudónimo literário de Álvaro Cunhal, que com ele assinou obras de ficção, designadamente Até Amanhã, Camaradas (1975), Cinco Dias, Cinco Noites (1975) e A Estrela de Seis Pontas (1994, adaptado para cinema por José Fonseca e Costa). A verdadeira identidade de Manuel Tiago só foi confirmada aquando da publicação deste último romance. Durante anos, muito se especulou acerca da autoria das obras.
More of an A-Z than an ABC. The selection, doesn't cover the key parts of Du Bois' view on race, as you might expect from an ABC. Instead it spans his long career, including letters, diaries, minor articles, and his changing opinions throughout. It's interesting to read Du Bois' evolving views, and his reactions to contemporary events, but less useful as a clear statement of his fundamental beliefs.
Probably better off reading Black Reconstruction and The Souls of Black Folk.