The U.S. Army in the Korean War Commemorative Website
A website from the US Army Center of Military History. Includes readable versions of the official US commemorative pamphlets and official history of the war.
Pamphlets: "The Outbreak," "The UN Offensive," "The Chinese Intervention," "Restoring the Balance," and "Years of Stalemate."
Books "U.S. Army in the Korean War" : "Policy and Direction - The First Year" by Schnabel, "South to the Naktong, North to the Yalu" by Appleman, "Truce Tent and Fighting Front" by Hermes, and "Ebb and Flow, November 1950-July 1951" by Mossman.