Indulgences: Luther's View & The Catholic Encyclopedia
Of the famous 95 Theses of Martin Luther, posted in Wittenberg, Germany (Saxony) on 31 October 1517, 47 were devoted to indulgences. The word indulgence I note how Luther got most things right about indulgences in 1517, briefly explain the concept & provide an abridgment of the related Catholic Encyclopedia article.
Source: patheos.com