Description for 1517: Martin Luther and the Invention of the Reformation Hardcover. Did Martin Luther really post his 95 Theses to the Wittenberg Castle Church door in October 1517? Probably not, says Reformation historian Peter Marshall. But though the event might be mythic, it became one of the great defining episodes in Western history, a symbol of religious freedom of conscience which still shapes our world 500 years later. Num Pages: 272 pages, 20 black and white illustrations. BIC Classification: 3JB; HBLH; HBT; HRAX; HRCC2; HRCC9. Dimension: 196 x 129. .