Most references to Luther's works in scholarly writing are made to either the Weimar edition, the St. Louis edition, or the Erlangen edition. Readers of Luther's Works: American Edition, which is a selection of Luther's works, often ask whether a given reference to the Weimar, St. Louis, or Erlangen editions is included in the American edition. This cross reference facilitates finding such references in volumes 1–54 of Luther's Works: American Edition. Scholars, pastors, and students of Luther have relied on Vogel's Cross Reference for 25 years. No other resource enables one to locate the original German and Latin for Luther's Works American Edition (Volumes 1–54).