The "Spartacus League of the Republic of Poland and Lithuania" was a post-Grantville revolutionary underground movement that appeared in Poland-Lithuania (a country that had been a life-long foe of Gusatvus Adolphus of Sweden). The League adopted its name after reading the history of Marxist revolutionary Rosa Luxemburg, a Polish Jew who helped found the "Spartacus League", and who was put to death after the Communist uprising in post-World War I Germany.

The specific history books were mal-appropriated in a temporary way from the home of James Nichols and Melissa Mailey by organizer Red Sybolt while Melissa was prisoner in the Tower of London.