Collections with materials pertaining to the Civil War can be found by searching Acumen with the phrase "civil war."
Below are some of the collections which have been digitized.
Edwin Forbes's Life Studies of the Great Army provides a unique, artistic perspective on the Civil War.
He had a strategic spot to observe the Pickett's charge at Gettysburg, and he was the first of the "special artists" to produce drawings of the battle to send to Leslie's. He resigned from Leslie's in 1864, but he continued to produce images of the war. Many of these drawings were made into copper plate etchings and published as Life Studies of the Great Army (1876).