America: History & Life (EBSCO)
This database is the most essential index for articles about the United States and Canada.
Historical Association’s Guide to Historical Literature
---See sections 40-44 in volume 2 of this important bibliography. The print edition is also available in the Reference Stacks at D20.3.A55 1995.
Harvard Guide to American History
---A classic work that provides chronological/subject lists of the most essential works published before 1974.