The Reformation began on October 31st 1517 when Martin Luther nailed his 95 theses to the church door in Wittenberg, Germany. These theses, written in protest against some practices of the Catholic Church, emphasized the necessity of Grace over Works for salvation.
Mt. Calvary Lutheran Church celebrates the 500th year anniversary of the Reformation by having Martin Luther drop by occasionally as a guest speaker.
Here are some of the talks Luther has given to Mt. Calvary:
Commentary on Prayer by Martin Luther
How Rapidly Trials and Triumphs Alternate by Martin Luther
Commentary on Romans by Martin Luther