Referencing Jeffrey S. Cramer’s book, Solid Seasons: The Friendship of Henry David Thoreau and Ralph Waldo Emerson, to explore the question of whether the two friends called one another “Waldo” and “Henry.”

The late Robert D. Richardson Jr.’s final book, Three Roads Back (Princeton University Press, 2023) explores how Ralph Waldo Emerson, Henry David Thoreau, and William James each coped with the grief of losing loved ones. Emerson lost his first wife, Ellen, to tuberculosis after less than two years of marriage, and his first child, Waldo, died of scarlet fever at the age of five.