A primary source is a document or record containing firsthand information or original data on a topic. Primary sources are created contemporaneously with the topic they describe. Examples of primary sources include:
Summary of characteristics:
A secondary source is a work that is one step removed from the original source. Secondary sources are created after the fact, and describe, summarize, analyze, or evaluate primary sources. Examples of secondary sources include:
Summary of characteristics:
If you are unsure of what would be considered a primary source for your particular project, ask your professor for examples. The following is an incomplete list of things that might be considered primary sources by different academic disciplines.
Anthropology
artifact, field notes, fossil, photograph
Art
architectural model or drawing, building or structure, letter, motion picture, organizational records, painting, personal account, photograph, print, sculpture, sketch book
Biology
field notes, plant specimen, research report
Economics
company statistics, consumer survey, data series
Engineering
building or structure, map, geological survey, patent, schematic drawing, technical report
Government
government report, interview, letter, news report, personal account, press release, public opinion survey, speech, treaty or international agreement
History
artifact, diary, government report, interview, letter, map, news report, oral history, organizational records, photograph, speech, work of art
Law
code, statute, court opinion, legislative report
Literature
contemporary review, interview, letter, manuscript, personal account, published work
Music
contemporary review, letter, personal account, score, sound recording
Psychology
case study, clinical case report, experimental replication, follow-up study, longitudinal study, treatment outcome study
Religious Studies
sacred texts, religious writings (sermons, hymns, prayers), historical documents and relics, oral traditions (stories, songs, rituals), artifacts and religious sites
Sociology
cultural artifact, interview, oral history, organizational records, statistical data, survey
Source: "Primary Sources: What are they?" Lafayette College Library.