Primary sources are first-hand accounts by participants of a particular event or materials produced at the same historical time period.
Some examples of primary sources include:
Usually, library catalog records have at least one subject heading describing the general topic of the book, video, or other material. Subject headings can be subdivided to indicate further topical breakdown, geographical location, time period, or the form of the composition. Some of the form subdivisions that indicate the items is a primary source include:
Sources: collections of contemporary writings
Tokyo (Japan)-- History -- Sources
Japan -- History -- Sources
Japan -- History -- Tokugawa period, 1600-1868 -- Sources
Japan -- History -- 19th century -- Sources
Description and Travel: Travelers' accounts
Japan -- Description and Travel
Japan -- Description and Travel -- Early works to 1800
Art, Literature
Art, Japanese -- Edo period, 1600-1868
Japanese literature -- Translations into English
Japanese literature -- Edo period, 1600-1868 -- Translations into English
Instead of using Subject Headings, you can also search for the words readers or documentary history in the Title field: Japan readers