Encyclopedia of American Religious History - Olin Ref BL 2525 .Q44 - Two volumes of essays on religious organizations, movements, and leaders in American history.

Encyclopedia of American Economic History - Olin Ref HC 103 .E52 - Three volumes of articles on the history of the American economy.

Encyclopedia of American Social History - Olin Ref HN 57 .E58 - Three volumes of articles on the history of American society.

Dictionary of American History - Olin Ref E 174 .A43 - Ten volume set covering political, economic, cultural, etc. aspects of American history.

Encyclopedic Dictionary of American Government - Olin Ref JK 9 .E5 - Brief entries defining the language, institutions, practices, and history of American government.

HarperCollins Dictionary of American Government and Politics - Olin Ref JK 9 .S43 - Brief but comprehensive coverage of the concerns of governance in the United States.

Annals of America - Olin Ref E 173 .A793 - a documentary history of the United States, comprised of 21 volumes of excerpts from significant writings, speeches, court decisions, editorials, news articles, memoirs, literature, etc. in American history.

American Writers - Olin Ref PS 129 .A55 - Eight volumes of extensive biographical and critical essays on significant American authors.

Guide to United States Popular Culture - Olin Ref E 169.1 .D399 - One (large) volume comprised of 1600 entries covering the broad mosaic of popular culture in the United States.