Claim: Yevgraf Kruten (29 December 1890-19 June 1917) was a member of the Imperial Russian Air Service between 1908-1917, and, he shared his new-found knowledge in a flurry of booklets
Evidence: Born Died Imperial Russian Air Service 1908-1917 After his return to Russia in March 1917, he shared his new-found knowledge in a flurry of booklets on military aviation.