Refer first to the excellent bibliography of the Battle of Wilson's Creek and Greene County contained within the Educators' Study Guide to Wilson's Creek National Battlefield (compiled and provided by the Wilson's Creek National Battlefield). Other recommended books are listed below.
American Heritage. Golden Book of the Civil War. A general reference work for grades 5-8.
Boatner, III, Mark Mayo. The Civil War Dictionary, Revised ed. New York: David McKay Co., 1959, 1989. One of the best Civil War reference works.
Brownlee, Richard. Gray Ghosts of the Confederacy: Guerrilla Warfare in the West, 1861-1865. Baton Rouge: Louisiana State University Press, 1958. A complementary but more general work than Castel's Quantrill.
Castel, Albert. William Clarke Quantrill: His Life and Times. New York: Frederick Fell, 1962. Reprinted by the General's Books: Marietta, Ohio, 1992. One of the most objective works not only on Quantrill, but also on guerrilla warfare in Missouri.
Burchard, Peter. The Deserter: A Spy Story of the Civil War. Juvenile fiction for grades 5-10.
Daniel, Larry J. Soldiering in the Army of Tennessee: A Portrait of Life in a Confederate Army. Chapel Hill: University of North Carolina Press, 1991. A succinct and readable account of the common soldier's life in the Western theatre of the war.
Fellman, Michael. Inside War: The Guerrilla Conflict in Missouri During the Civil War. New York: Oxford University Press, 1989. A detailed but very useful study of the guerrilla war.
Hunt, Irene. Across Five Aprils. Civil War fiction about how the war affected one family in Illinois. For grades 7 and up.
Ingenthron, Elmo. Borderland Rebellion. Branson, Missouri: The Ozarks Mountaineer, 1980. This work has more information on the extensive number of military actions along the Missouri-Arkansas border than any other single work.
Klapp, August K. The Ray House. Springfield, Missouri: Wilson's Creek National Battlefield Foundation, 1987 (2nd Ed.). Brief but entertaining account of the Ray House (and family) before, during, and after the Battle of Wilson's Creek.
Lathem, Frank B. The Dred Scott Decision, March 6, 1857: Slavery and the Supreme Courts "Self Inflicted Wound." Informative account of the antebellum case that helped set the stage for the Civil War period; For Grades 9 and up.
Linderman, Gerald F. Embattled Courage: The Experience of Combat in the American Civil War. New York: The Free Press, 1987. Linderman offers new insights not only into what combat was like for the individual during the Civil War, but also about how their expectations about the "glories" of war were so different from the grim realities of combat, and how they reconciled those differences.
Robertson, Jr., James. Soldiers Blue and Gray. Columbia, South Carolina: The University of South Carolina Press, 1988; reprinted, New York: Warner Books, Inc., 1991. A fresh, insightful, and quite readable account of life and death for common soldiers during the Civil War.
Stanley, Caroline Abbot. Order Number 11, a Tale of the Border. Considers Union efforts to stop Confederate guerrilla raids and how this affected civilians along the Missouri-Kansas border (Grades 9 and up).
Steele, Phillip W. and Steve Cottrell. Civil War in the Ozarks. Gretna, Louisiana: Pelican Publishing Co., 1993. Brief but useful overview of this topic suitable for grades 7-8.
Wiley, Bell Irvin. The Life of Billy Yank. Baton Rouge: Louisiana State University Press, 1952, 1971, 1981.
_________________. The Life of Johnny Reb. Baton Rouge: Louisiana State University Press, 1943, 1971, 1978, 1981. Wiley's classic works on the lives of common soldiers during the Civil War are still the standard reference sources as well as a delight to read.