Prof. Jacobs has advice for writing high-quality papers: (PDF)
The following links may be useful in your study of American commercials.
History Matters - A comprehensive list of other Web sites and Web-based resources on historical subjects.
Ad Access - Thousands of old advertisements.
Emergence of American Advertising - Thousands more old advertisements.
Ad Flip - Yet more print advertisements!
Advertising World - Lots of information about the history of advertising.
Living Room Candidate - Political commercials, 1952-present.
Prosperity and Thrift - Documents and history of 1920s consumer culture.
Tupperware - Companion site to PBS documentary "Tupperware!".