[Barrett]

While working with Dolfo Galland at Champlin Museum Press in the '80s I became acquainted with Sergei Sikorski, an accomplished gent. (He said his son had a dream job--delivering sailboats all over the world with a female crew. Puh-LEESE don't throw me in dat briar patch!) I believe the company has a good history dept in Connecticut but don't know particuars.
Soviet aircraft "companies" actually were design bureaus under the name of the founders, hence Yakovlev, Sukhoi, Tupelov, Mikoyan-Gurevich, etc. They were state owned and generally given specialties: Yak & MiG fighters, Tupelov bombers & transports, Sukhoi attack aircraft, etc. Some of the oldies such as Polikarpov and Lavochkin disappeared after WW II.