America: History & Life is an index of literature covering the history and culture of the United States and Canada, from prehistory to the present. The database indexes journals from 1964 to the present and also includes citations and links to book and media reviews. Strong English-language journal coverage but also included are abstracts in English of articles published in more than 40 languages.
Historical Abstracts covers the history of the world (excluding the United States and Canada) from 1450 to the present. The database indexes academic historical journals in over 40 languages back to 1955.
EndNote is a subscription software program designed to store and manipulate bibliographic information (your citations). This link takes you to Northwestern University Libraries' full guide to using EndNote.