I'll just start picking a few of way too many books............
Dr. Jochen Prien, Peter Rodeike and Gerhard Stemmer German language uni histories:
JG 1 und 11, 3 volumes
JG 3, 3 volumes
JG 27, 3 volumes
JG 27 by Werner Girbig
JG 5 by Girbig
JG 7 by Manfred Boehme
JG 26 by Don Caldwell
JG 1 by Eric Mombeek
JG 4, 2 volumes by Eric Mombeek
JG 51 by W. Held
Grünherzjäger by Trautloff and Bob
Green Hearts by Axel Urbanke/ EE editions
JG 300, vol 1 as previously stated. EE editions
Luftwaffe fighter aces, 2 volumes by Bernd Barbas, a classic !
Reichsverteidigung by Girbig
Rocket fighter by Mano Ziegler
Me 163 Test Unit by Wolfgang Späte
ok this is small selection of German unit histories and does not include all of them nor any of the night fighter Books...........this is for later