What are primary sources?
Definition: Primary sources are original materials. They are from the
time period involved and have not been filtered through interpretation or
evaluation. Primary sources are original materials on which other research is
based. They are usually the first formal appearance of results in physical,
print or electronic format. They present original thinking, report a discovery,
or share new information.
Note: The definition of a primary
source may vary depending upon the discipline or context.
Examples include:
- Artifacts (e.g. coins, plant specimens, fossils, furniture,
tools, clothing, all from the time under study);
- Audio recordings (e.g. radio programs)
- Diaries;
- Internet communications on email, listservs;
- Interviews (e.g., oral histories, telephone, e-mail);
- Journal articles published in peer-reviewed publications;
- Letters;
- Newspaper articles written at the time;
- Original Documents (i.e. birth certificate, will, marriage
license, trial transcript);
- Patents;
- Photographs
- Proceedings of Meetings, conferences and symposia;
- Records of organizations, government agencies (e.g. annual
report, treaty, constitution, government document);
- Speeches;
- Survey Research (e.g., market surveys, public opinion polls);
- Video recordings (e.g. television programs);
- Works of art, architecture, literature, and music (e.g.,
paintings, sculptures, musical scores, buildings, novels, poems).
- Web site
From http://www.lib.umd.edu/guides/primary-sources.html
What are secondary sources?
Definition: Secondary sources are less easily defined than
primary sources. Generally, they are accounts written after the fact with the
benefit of hindsight. They are interpretations and evaluations of primary
sources. Secondary sources are not evidence, but rather commentary on and
discussion of evidence. However, what some define as a secondary source, others
define as a tertiary source. Context is everything.
Note: The definition of
a secondary source may vary depending upon the discipline or context.
Examples include:
- Bibliographies (also considered tertiary);
- Biographical works;
- Commentaries, criticisms;
- Dictionaries, Encyclopedias (also considered tertiary);
- Histories;
- Journal articles (depending on the disciple can be primary);
- Magazine and newspaper articles (this distinction varies by
discipline);
- Monographs, other than fiction and autobiography;
- Textbooks (also considered tertiary);
- Web site (also considered primary)
From http://www.lib.umd.edu/guides/primary-sources.html
What are tertiary sources?
Definition:
- Almanacs;
- Bibliographies (also considered secondary);
- Chronologies;
- Dictionaries and Encyclopedias (also considered secondary);
- Directories;
- Fact books;
- Guidebooks;
- Indexes, abstracts, bibliographies used to locate primary and
secondary sources;
- Manuals;
- Textbooks (also be secondary)
From http://www.lib.umd.edu/guides/primary-sources.html
Comparison across the disciplines
From http://www.lib.umd.edu/guides/primary-sources.html
| SUBJECT | PRIMARY | SECONDARY | TERTIARY |
| Art and Architecture | Painting by Manet | Article critiquing art piece | ArtStor database |
| Chemistry/Life Sciences | Einstein's diary | Monograph on Einstein's life | Dictionary on Theory of Relativity |
| Engineering/Physical Sciences | Patent | NTIS database | Manual on using invention |
| Humanities | Letters by Martin Luther King | Web site on King's writings | Encyclopedia on Civil Rights Movement |
| Social Sciences | Notes taken by clinical psychologist | Magazine article about the psychological condition | Textbook on clinical psychology |
| Performing Arts | Movie filmed in 1942 | Biography of the director | Guide to the movie |
Primary Resources on the Web
Using Primary Sources on the Web a brief guide to evaluating primary Internet resources.
The Historical Text Archive (HTA) is a searchable database with three sections: full-text articles (also includes essays and photographs), e-books, and links to other digitized primary resources.
Repositories of Primary Sources a directory of over 5,000 websites describing holdings of manuscripts, archives, rare books, historical photographs, and other primary sources for the advanced research scholar. Includes links to libraries and other institutions with digitized primary resources.
Description
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