Williams did, however, communicate well with his family, and the letters he wrote throughout the war were saved and published posthumously in 1959 as the well-regarded book, From the Cannon's Mouth: The Civil War Letters of General Alpheus S. Williams.
Williams var derimod god til at holde forbindelsen ved lige til sin familie og de breve han skrev under krigen blev gemt og udgivet i 1959 længe efter hans død som den velanskrevne bog From the Cannon's Mouth: The Civil War Letters of General Alpheus S. Williams.