Which of the following best describes the importance of a primary source?

Sources of information or evidence are often categorized as primary, secondary, or tertiary material. These classifications are based on the originality of the material and the proximity of the source or origin. This informs the reader as to whether the author is reporting information that is first hand or is conveying the experiences and opinions of others which is considered second hand. Determining if a source is primary, secondary or tertiary can be tricky. Below you will find a description of the three categories of information and examples to help you make a determination.

Primary Sources

These sources are records of events or evidence as they are first described or actually happened without any interpretation or commentary. It is information that is shown for the first time or original materials on which other research is based.  Primary sources display original thinking, report on new discoveries, or share fresh information.

Examples of primary sources:
Theses, dissertations, scholarly journal articles (research based), some government reports, symposia and conference proceedings, original artwork, poems, photographs, speeches, letters, memos, personal narratives, diaries, interviews, autobiographies, and correspondence.

Secondary Sources

These sources offer an analysis or restatement of primary sources. They often try to describe or explain primary sources. They tend to be works which summarize, interpret, reorganize, or otherwise provide an added value to a primary source.

Examples of Secondary Sources:
Textbooks, edited works, books and articles that interpret or review research works, histories, biographies, literary criticism and interpretation, reviews of law and legislation, political analyses and commentaries.

Tertiary Sources

These are sources that index, abstract, organize, compile, or digest other sources. Some reference materials and textbooks are considered tertiary sources when their chief purpose is to list, summarize or simply repackage ideas or other information. Tertiary sources are usually not credited to a particular author.

Examples of Tertiary Sources:
Dictionaries/encyclopedias (may also be secondary), almanacs, fact books, Wikipedia, bibliographies (may also be secondary), directories, guidebooks, manuals, handbooks, and textbooks (may be secondary), indexing and abstracting sources.

Primary sources provide a first-hand account of an event or time period and are considered to be authoritative. They represent original thinking, reports on discoveries or events, or they can share new information. Often these sources are created at the time the events occurred but they can also include sources that are created later. They are usually the first formal appearance of original research.

Secondary sources involve analysis, synthesis, interpretation, or evaluation of primary sources. They often attempt to describe or explain primary sources.

Scholarly journals, although generally considered to be secondary sources, often contain articles on very specific subjects and may be the primary source of information on new developments.

Primary and secondary categories are often not fixed and depend on the study or research you are undertaking. For example, newspaper editorial/opinion pieces can be both primary and secondary. If exploring how an event affected people at a certain time, this type of source would be considered a primary source. If exploring the event, then the opinion piece would be responding to the event and therefore is considered to be a secondary source.

Primary sources

Examples of primary resources include:

  • diaries, correspondence, ships' logs
  • original documents e.g. birth certificates, trial transcripts
  • biographies, autobiographies, manuscripts
  • interviews, speeches, oral histories
  • case law, legislation, regulations, constitutions
  • government documents, statistical data, research reports
  • a journal article reporting NEW research or findings
  • creative art works, literature
  • newspaper advertisements and reportage and editorial/opinion pieces

Primary sources can be found using:

  • Library collection
  • Primary sources for history subject guide

Secondary sources

Secondary sources offer an analysis, interpretation or a restatement of primary sources and are considered to be persuasive. They often involve generalisation, synthesis, interpretation, commentary or evaluation in an attempt to convince the reader of the creator's argument. They often attempt to describe or explain primary sources.

Examples of secondary sources include:

  • journal articles that comment on or analyse research
  • textbooks
  • dictionaries and encyclopaedias
  • books that interpret, analyse
  • political commentary
  • biographies
  • dissertations
  • newspaper editorial/opinion pieces
  • criticism of literature, art works or music

A primary source is a first hand testimony, document, speech or other evidence that gives insight into a particular person or an event. They are often created during the time period which is being studied but can also be produced later by eyewitnesses or participants.

Which of the following best describes the importance of a primary source?
Primary sources allow researchers to get as close as possible to original ideas, events, and empirical research as possible. Such sources may include creative works, first hand or contemporary accounts of events, and the publication of the results of empirical observations or research. 

Secondary sources analyze, review, or summarize information in primary resources or other secondary resources. Even sources presenting facts or descriptions about events are secondary unless they are based on direct participation or observation. Moreover, secondary sources often rely on other secondary sources and standard disciplinary methods to reach results, and they provide the principle sources of analysis about primary sources.

Tertiary sources provide overviews of topics by synthesizing information gathered from other resources. Tertiary resources often provide data in a convenient form or provide information with context by which to interpret it.

The distinctions between primary, secondary, and tertiary sources can be ambiguous. An individual document may be a primary source in one context and a secondary source in another. Encyclopedias are typically considered tertiary sources, but a study of how encyclopedias have changed on the Internet would use them as primary sources. Time is a defining element.

While these definitions are clear, the lines begin to blur in the different discipline areas. See box below for examples. 

(Adapted from: VirginaTech Library under CCBY 4.0)

Which of the following best describes the importance of a primary source?
Primary Sources are immediate, first-hand accounts of a topic, from people who had a direct connection with it. Primary sources can include:

Texts of laws and other original documents.

Newspaper reports, by reporters who witnessed an event or who quote people who did.

Speeches, diaries, letters and interviews - what the people involved said or wrote.

Original research.

Datasets, survey data, such as census or economic statistics.

Photographs, video, or audio that capture an event.

A primary source is a first-hand or contemporary account of an event or topic. They are the most direct evidence of a time or event because they were created by people or things that were there at the time or event. These sources have not been modified by interpretation and offer original thought or new information. Primary sources are original materials, regardless of format.

Letters, diaries, minutes, photographs, artifacts, interviews, and sound or video recordings are examples of primary sources created as a time or event is occurring. Oral histories, newspaper or journal articles, and memoirs or autobiographies are examples of primary sources created after the event or time in question but offering first-hand accounts.

Which of the following best describes the importance of a primary source?

Primary sources may be transformed from their original format into a newer one, such as when materials are published or digitized, but the contents are still primary. There are many primary sources available online today, but many more are still available in their original format, in archives, museums, libraries, historical sites, and elsewhere.