Secondary sources analyze, discuss, and comment upon primary sources. They provide a second-hand account and are one step removed from the original. Tertiary sources, on the other hand, are based entirely on secondary sources.
The Online Dictionary for Library and Information Science by Joan Reitz provides the following definition for secondary source:
Any published or unpublished work that is one step removed from the original source, usually describing, summarizing, analyzing, evaluating, derived from, or based on primary source materials, for example, a review, critical analysis, second-person account, or biographical or historical study. Also refers to material other than primary sources used in the preparation of a written work.
Provides indexing of over three million articles from more than 550 leading magazines including full coverage of the original print volumes of Readers’ Guide to Periodical Literature. This resource offers researchers access to information about history, culture and seminal developments across nearly a century. Readers’ Guide Retrospective: 1890-1982 includes all the information from 44 Readers’ Guide to Periodical Literature annuals, as well as access to over three million articles from approximately 550 leading magazines.
Search over 200 years of The Times (London), an invaluable historical source widely considered to be the world's ‘newspaper of record.’
All students and faculty have unlimited access to The New York Times digital platforms, including personalized user experience, live coverage of breaking news, access to NYT articles between 1851-current, access to the International edition and Canadian, Chinese, and Spanish editions, full access to the NYT Learning Network, and access to the InEducation resource that helps faculty bring current events into the classroom. This resource includes access to archival content and replaces Historical New York Times and New York Times Archive.
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New York Times: 1857 - 2016
Time: 1923 - 2015
Wall Street Journal: 1971 - 2009
Washington Post: 1971 - 2000