During our research, I have used the following sources:
– Operations of the 423rd Infantry Regiment, 106th Infantry Division in the vicinity of Schönberg, Germany during the Battle of the Ardennes.
– the battle at St Vith, Ray Merriam
– Battle at Grosslangenfeld (424th reg)
– The 7th Armored Division website of the highly respected Wesley Johnson
– Various websites about 106th/ 7thAD related
– The Battle at St. Vith, the US armor school
– The defense of St. Vith (dissartation)