Robert Nisbet Bain, 1911 Encyclopædia Britannica, Volume 1… (1911)
“ In 1262 the Tatar tribute was felt so grievously all over Russia that preparations were made for a general insurrection, and Alexander, who knew that an abortive rebellion would make the yoke heavier, was obliged to go to the Horde in person to prevent the Tatars from again attacking Russia. ”
