I have a new toy: an online book at Making of America:
Malcom, Howard. Theological index : references to the principal works in every department of religious literature embracing nearly seventy thousand citations, alphabetically arranged under two thousand heads. ( 1868)
It is what it says it is, but the nice thing is that it gives citations by subject for ancient Christian works -- the kind of thing you don't find in bibliographies of practical theology today -- and the subject are well divided for pastoral ministry. "Character of Christ" "Christian liberty" "Degrees in Glory" both pro and con -- and so forth. Many books and some serials are indexed.
Universalists are given good coverage, and I now have a citation about the nature of the ministry that I want to hunt down. Their entry for Universalism gives an ideal period library, again, both pro and con. (Richard Eddy's Universalist bibliography of the same period is more comprehensive, though.)
A good research tool, and free.