McCoslin was an African American barber who cut white men’s hair in Bloomington, a convention of his times. An intelligent, civic-minded, and charismatic man, McCoslin had his letters home from the Civil War published in the Pantagraph. Following the war, he helped arrange a reception for guest speaker Frederick Douglass in 1866. McCoslin’s early death was probably due to exposure to illness during his service. He is thought to be buried in the older section of Evergreen Memorial Cemetery.