"Primary sources are the raw materials of history — original documents and objects which were created at the time under study. They are different from secondary sources, accounts or interpretations of events created by someone without firsthand experience." (Library of Congress)
For more detailed explanations with examples:
Scholarly academic journals
Readers' Guide Retrospective (1890-1982)
Readers' Guide Abstracts indexes and abstracts general interest and popular periodicals published in the U.S. and Canada.
New York Times (1851 to 3 years ago)
PDF version of the historical New York Times. Looks exactly like a copy of the paper.
New York Times (1995 to present)
Text version of the New York Times. Does not include sidebars or graphics.
Kalamazoo Gazette Historical
Full-text coverage of the weekly and daily versions of the Kalamazoo Gazette, 1837-1922.
NOTE: The Library has The Kalamazoo Gazette on microfilm from 1978-present. Years inbetween may be accessed on microfilm at the Kalamazoo Public Library.
Godey's Lady's Book (1830-1845)
The magazine, begun in 1830, was intended to entertain, inform and educate the women of America.
The Atlantic, 1932 -
Atlantic Monthly, 1857-1932
Century (title changes - Century Magazine, Century Illustrated Monthly Magazine) 1882-1930
Christian Century, 1923 -
Current History 1919-
Harper’s Magazine, 1913 -
Harper’s Monthly Magazine, 1900-1913
Harper’s New Monthly Magazine, 1850-1900
Life, 1936 -
The Nation, 1905 -
The National Geographic magazine, 1889- present
The New Yorker, 1936 -
Saturday Review, 1929 -
Time, 1930 -
US News & World Report, 1948-
Check for specific location and holdings in Ariadne.