Did Martin Luther wield his hammer on the Wittenberg church door on October 31, 1517?

Did he even post the Ninety-five Theses at all?

This collection of documents sheds light on the debate surrounding Luther's actions and the timing of his writing and his request for a disputation on the indulgence issue. The primary documents in this book include the theses, their companion sermon ("A Sermon on Indulgence and Grace", 1518), a chronological arrangement of letters pertinent to the theses, and selections from Luther's Table Talk that address the Ninety-five Theses. A final section contains Luther's recollections, which offer today's reader the reformer's own views of the Reformation and the Ninety-five Theses.