Hi John,
There is a book out on Yak fighters (1996 or so) (covering mainly Yak 1/Yak7) by Sergei Kuznetsov. In Russian but the mst detailed analysis of this aircraft in any book I have seen.
Erik's is good for camouflage as well. Sergei's is better for drawings/details and the construction numbers/types etc.
Should find it on the web. - found this
http://vvs.hobbyvista.com/Markings/D...rs_part07.html
Apparently, AeroMaster has been perusing the various Yak fighter books recently published, and in this case they have stumbled upon an absolute winner. These decal sets were all taken from the pages of the very outstanding Yak-1 book by Russian author S. Kuznetsov, "Perviy Yak" ("The First Yak") [Lyubimaya Kniga Press, 1995]. This outstanding work may be regarded as the superlative current reference on the Yak-1 fighter, and with Kuznetsov's tireless research, very little here is left to chance.
regards
Mark