No problem. I know from a most certain source that he scored his 69th against a LaGG-3 and his 70th against a Pe-2 during the same combat on 7 September 1942. (Through an unfortunate coincidence, both these claims are missing in Tony Wood's Luftwaffe claims list.) I'll present this particular source in "Black Cross/Red Star", Vol. 3.
As you will see in "Black Cross/Red Star", Vol. 3, these claims can be verified with Soviet sources. The aircraft belonged to 366 BAP(Pe-2) and 790 IAP (LaGG-3). 790 IAP’s commissar, Batalyonnyy Komissar Fedosiy Dubkovskiy, was killed.
(In total, the operations on 7 September 1942 cost 219 BAD a loss of eight LaGG-3s and three Pe-2s. Politruk Sapurnov was made scapegoat for this setback, and was court-martialled. Okay, now I can't copy more from the mansucript of "Black Cross/Red Star", Vol. 3.
It will be published this summer by Eagle Editions - see the previews of some page layout on their website:
http://www.eagle-editions.com/BCRS.HTM
All best,
Christer Bergström