Memo from Dr. Jim Williams (Branch Historian); Lam Son 719, January-March 1971: A Baptism by Fire for Modern Army Aviation (article by Dr. Williams); Series of articles in Aviation Digest, 1986; Airmobile Operations in Support of Operation Lam Son 719, Vol. I & II (101st Airborne Division), 1971; BG Sidney B. Berry's After Action Report on Lam Son 719, March 1971; PowerPoint presentation, Lam Son 719: Laos Incursion 1971: Birth of Modern Army Aviation by Dr. Jim Williams; Maps; Excerpts from Vietnam: the Helicopter War by Philip D. Chinnery, Mounted Combat in Vietnam by Donn A. Starry and Airmobility, 1961-1971 by John J. Tolson