Machashavah Indexes

Atid has posted some bibliographies to Jewish Thought: link

Personally, I think the omission of the Chazon Ish's Emunah U-Vitachon is an unfortunate oversight. And for secondary sources, I would have included R. J. David Bleich's With Perfect Faith and R. Shaul Yisraeli's Perakim Be-Machasheves Yisrael.

Anyone have any other suggestions? I can turn this post into a bibliography of Jewish Thought if I get enough good suggestions.