History of Ukraine-Rusʹ (Ukrainian: Історія України-Руси, romanized: Istoriia Ukrainy-Rusy) is a monumental 10-volume monographic series by Mykhailo Hrushevsky. The work is generally considered a magnum opus and a foundation of the contemporary history of Ukraine. It covers the period from ancient times to the second half of the 17th century. It was written between 1895 and 1933. Source: Wikipedia (en)