Reader's Guide to Tillich's Systematic Theology

Reader's Guide to Tillich's Systematic Theology
http://people.bu.edu/wwildman/tillich/stguide/stguide.htm

Reading Tillich Series
http://shrinkinguni.blogspot.com/2006/11/reading-tillich-series.html

Theobald Ziegler

Theobald Ziegler : David Friedrich Strauss (1908) (German)
http://archive.org/details/davidfriedrichs00zieggoog