Some Library catalog searches:
Berlin (Germany) -- History (subject)
Berlin (Germany) -- History -- 1990- (subject)
Berlin (Germany) -- History -- 1945-1990 (subject)
Berlin (Germany) -- History -- 1918-1945 (subject)
World War, 1939-1945 -- Germany -- Berlin (subject)
Relevant Databases:
Worldwide Political Science Abstracts
Selected books and web sites:
Berlin / David Clay Large (A recent cultural historical work with a significant bibliography.)
Faust's metropolis : a history of Berlin / Alexandra Richie (Encyclopedic in scope with an excellent bibliography.)
The ghosts of Berlin : confronting German history in the urban landscape / Brian Ladd(architectural history within the context of Berlin's cultural tradtion)
Encyclopedia of the Cold War : a political, social, and military history / Spencer C. Tucker, editor(a comprehensive reference work, not limited to Germany, but with the most recent scholarship: H-L Reference: D840 .E63 2008 (v1.-v.5))
Berlin in the 1920's: Politics/History subsection and General Resources subsection (web-based course guide from Wellesley)
Berlin Topographies: Berlin timeline and Key Figures and Resources subsection (web guide to cultural Berlin, from Univ. of Texas Germanic Studies Dept.)