Columbia subject headings:
Reformation--Germany--History--Sources.
Spengler, Lazarus, 1479-1534.
Harvard subject headings:
Reformation
Spengler, Lazarus, 1479-1534--Correspondence.
Theology--Early works to 1800
Princeton subject headings:
Reformation--Germany--History--Sources.
Spengler, Lazarus, 1479-1534.