Jacobson, Lee. Igor Sikorsky Was a Reflection of His Heritage and Experiences in life // Sikorsky Archives News. April 2013. p. 2. Архивиран от оригинала на 2022-01-21. (...) when [Sikorsky] responds to questions regarding his roots, he would answer: “My family is of Russian origin. My grandfather and other ancestors from the time of Peter the Great were Russian Orthodox priests. Consequently, the Russian nationality of the family must be considered as well established” (на английски)
web.archive.org
Jacobson, Lee. Igor Sikorsky Was a Reflection of His Heritage and Experiences in life // Sikorsky Archives News. April 2013. p. 2. Архивиран от оригинала на 2022-01-21. (...) when [Sikorsky] responds to questions regarding his roots, he would answer: “My family is of Russian origin. My grandfather and other ancestors from the time of Peter the Great were Russian Orthodox priests. Consequently, the Russian nationality of the family must be considered as well established” (на английски)
