NEW YORK (AP) — A posthumous work by prize-winning historian Robert D. Richardson will come out in 2022. It centers on three major American thinkers he previously wrote books about: Ralph Waldo Emerson, Henry David Thoreau and William James.

Princeton University Press announced Tuesday that it will publish “Three Roads Back: How Emerson, Thoreau, and William James Responded to the Greatest Losses of Their Lives,” which Richardson had completed before his death in June at age 86. He reflected on how each man was shaped by grief for beloved family members.

“Emerson, Thoreau, and William James all made lasting contributions to modern life, and their personal triumphs over disaster and loss and defeat are further contributions,” Richardson wrote in the preface. "Think of them as fellow human beings, facing losses and troubles much like ours.”

Richardson's books included “Thoreau: A Life of the Mind"; ”Emerson: The Mind on Fire," winner of the Francis Parkman Prize in 1996; and “William James: In the Maelstrom of American Modernism,” which won the Bancroft Prize in 2007.