Russian Flag - Its Origins and History - Symbols of Russia
English: Table I. Evolution drawing of flags of the 1668 to 1917 Русский: Таблица I. Эволюция рисунка флагов с 1668 по 1917 г.; 25 June 2016; http://flot.com/publications/books/shelf/flag/3.htm?sphrase id=3229240; Imperial Russian Navy Stock
Russia National Flag | History & Facts | Flagmakers