“Although indulgences are the very merits of Christ and of His saints and so should be treated with all reverence, they have in fact nonetheless become a shocking exercise of greed. For who actually seeks the salvation of souls through indulgences, and not instead money for his coffers? This is evident from the way indulgences are preached. For the commissioners and preachers do nothing but extol indulgences and incite the people to contribute. You hear no one instructing the people about what indulgences are, or about how much they grant, or about the purpose they serve. Instead, all you hear is how much one must contribute. The people are always left in ignorance, so that they come to think that by gaining indulgences they are at once saved.”

Tractatus de indulgentiis per Doctorem Martinum ordinis s. Augustini Wittenbergae editus., or, A Treatise on Indulgences Published by Doctor Martin of the Order of St. Augustine in Wittenberg. To Archbishop Albrecht of Mainz (31 October 1517) Luther's "forgotten" treatise was found in the Mainz archives “among the papers making up the correspondence between Archbishop Albrecht and the Mainz University faculty in December 1517” and published by F. Herrmann in the Zeitschrift für Kirchengeschichte (ZKG) in 1907, vol. 28, pp. 370-373. Catholic Luther scholar Jared Wicks S. J. believes this early treatise to be of considerable historical significance: "This document is the short treatise sketching a tentative theology of indulgences which Luther sent to Archbishop Albrecht of Mainz and Magdeburg on that fateful October 31, 1517. The other two documents of Luther's intervention are well known. First, there was the respectful, though urgent letter to the Archbishop in which Luther related the misunderstandings being spread by Tetzel's preaching and in which he begged the Archbishop to issue new instructions which would bring Tetzel under control. Secondly, there was the list of Latin theses on the doctrine and practice of indulgences which Luther intended to use as the basis of a theological discussion of the many vexed questions in this area. The third document sent to Albrecht, Luther's treatise, has not received the attention it deserves from historians and theologians studying the beginning of the Reformation. This is most regrettable, since the treatise depicts in orderly and succinct fashion Luther's understanding of indulgences in 1517 and reveals his conception of their limited role in Christian living. The treatise gives us the theological standpoint on which Luther based his intervention, and it shows in miniature the rich Augustinian spirituality of penance and progress that he had forged in his early works. ...[T]he great tragedy of 1517 was that the barbed [95] theses spread over Germany in a matter of weeks, and this penetrating little treatise fell into dusty oblivion."
Martin Luther's Treatise on Indulgences, Theological Studies 28 (1967), pp. 481-482, 518. http://www.google.com/search?tbm=bks&hl=en&q=%22forgotten+document+in+luther%27s%22&btnG=#hl=en&q=%22forgotten%20document%20in%20luther%27s%22&um=1&bpcl=35466521&psj=1&ie=UTF-8&sa=N&tab=pw&psj=1&ei=Y-6JUJ-mL4eo8gShuYDIBQ&bav=on.2,or.r_gc.r_pw.r_qf.&fp=e5b835ba41618e18&biw=1232&bih=702 http://www.google.com/search?tbm=bks&hl=en&q=%22forgotten+document+in+luther%27s%22&btnG=#hl=en&q=%22forgotten+document+in+luther%27s%22&um=1&bpcl=35466521&psj=1&ie=UTF-8&tbo=u&tbm=bks&source=og&sa=N&tab=wp&psj=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=4fa257fccf8e3a83&biw=1232&bih=702