In continued celebration of Black History Month, National Geographic recently released books by authors, Ann Bausum and Michael H. Cottman, who have each devoted their careers to discovery, research, exploration and impact. These authors tell the unvarnished truth about African American history during the slave trade (Cottman’s Shackles From The Deep) and the Civil Rights Movement (Bausum’s The March Against Fear). While Black History Month is coming to a close, these books and the authors' thoughts, below, remind us that black history is America’s history and celebrated every day.