A century before the civil rights protests in Selma and Birmingham, 27-year-old Octavius Catto led the fight to desegregate Philadelphia's horse-drawn streetcars. And before the age of 32, he had also raised all-black regiments to fight in the Civil War, pushed for black voting rights and started an all-black baseball team. Catto's forgotten history prompted two reporters, Dan Biddle and Murray Dubin, to dig deeper. They talked to NPR about their new book from Temple University Press: Tasting Freedom: Octavius Catto and the Battle for Equality in Civil War America.