1. The dialectic ecology of the newspaper
2. S.N.D. North, History and Present Condition of the Newspaper and Periodical Press of the United States (Washington, D.C.: Government Printing Office, 1884). North used the term “diffusion” to mean distribution of the daily press into the population. He claimed that “newspaper diffusion [in 1880]… warrants the claim in its behalf of an exceptional influence upon the opinions of the people of the whole country.” See page 178.
3. Is Daily Circulation Keeping Pace with the Nation's Growth?