Yak-7UTI By Michal Sekula
Yak-7A, 12 giap PVO By Michal Sekula
Yak-7B early, V.S. Mironenko, 195 iap, 324 iad By Michal Sekula
Yak-7B early, Y.I.Filippov, 307 iap By Michal Sekula
Yak-7B late, 146 iap, 7 giad By Michal Sekula
Yak-7B late, 12 iap PVO By Michal Sekula
Yak-7B late, 42 iap, 240 iad By Michal Sekula
Yak-7B late, A.V. Vorozhejkin, 728 iap, 256 iad By Michal Sekula

Links:

http://massimotessitori.altervista.org/sovietwarplanes/board/index.php?board=43.0 subforum on Sovietwarplanes about Yak fighters.

http://airfield.narod.ru/index.html Yaks in general: an huge amount of photos, profiles and other documents, in Russian.

 http://www.airfield.narod.ru/yak/yak-7/yak-7.html Page on Yak-7s in paricular, in Russian.

http://walkarounds.airforce.ru/avia/rus/yak/yak-9/index.htm Walkaround of an early Yak-9, very similar to Yak-7B, at the Yakovlev museum.

https://coollib.com/b/261704/read page on Yaks

http://scalemodels.ru/modules/forum/viewtopic_t_9320.html page of Scalemodels.ru on Yak-7/9

http://www.airforce.ru/aircraft/engines/vk105pf/index.htm: Engine M-105PF

http://scalemodels.ru/modules/forum/viewtopic_t_9320.html Wide page on Scalemodels.ru about Yak-7/9. In Russian.

http://www.airwar.ru/fighterww2.html index with links to detailed descriptions of all fighter planes, including all versions of Yaks. In Russian.