The Paratrooper Research team.
http://www.pararesearchteam.com/
U.S. 9th Infantry Division website.
http://9thinfantrydivision.net/
U.S. 99th Infantry Division website.
http://www.99thinfantrydivision.com/
U.S. 36th Infantry Regiment, 3rd Armored Division.
http://36thair3ad.homestead.com/36AIR_MainPage.html
The battle of Grandmenil.
http://www.grandmenil.com/
US 83rd Infantry Division Documents.
http://83rdinfdivdocs.org/
They Speak: Voices of Henri-Chapelle American Cemetery.
http://www.theyspeak.org/