Today we’re talking about another surprising Brattle find: a fairly nondescript album that turned out to contain photos of prominent 1800s abolitionists. The collection includes small, sepia-toned portraits of Charles Sumner, Phillips Brooks, and even Sojourner Truth. We’ll also discuss other historical photos that have arrived at the shop, and the way that studio photography democratized image-making during the Civil War era, offering life-like portraits for a fraction of the cost of a commissioned painting. It all comes into focus on a flashy new #brattlecast.