Kammen, Michael. A Time to Every Purpose, The Four Seasons in American Culture. University of North Carolina Press, 1st Edition, 2004. 336 pp. Hardbound.
In this excellent book, Kammen traces the motif of Four Seasons in American popular culture and fine arts from the seventeenth century to the present. Includes numerous references to and by Thoreau.

Michael Kammen delivered the 2005 Dana Brigham Memorial Keynote Address at the Thoreau Society's Annual Gathering in Concord, Mass.