short note unwritten source
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A primary source is a record left by a person (or group) who participated in or witnessed the events you are studying or who provided a contemporary expression of the ideas or values of the period under examination.
Examples of primary sources include letters, autobiographies, diaries, government documents, minutes of meetings, newspapers, or books written about your topic at that time. Non-written sources include interviews, films, photos, recordings of music, clothing, buildings, or tools from the period.
Secondary sources are accounts written by people who were not themselves involved in the events or in the original expression of the ideas under study. Written after the events/ideas they describe, they are based upon primary sources and/or other secondary works. Thus, an early 20th-century historian could prepare a secondary study of the American Civil war through her reading of documents from that period, interviews with veterans, examination of weapons, and so on.
Archaeological sources are basically the material evidence like historical buildings, coins, inscriptions and other remains that gives important and detailed information pertaining to a particular period. ... It provides us with a more unbiased information. These sources are divided into two main groups. They are Archaeological and Literary. The Archaeological Source can again be divided into three groups, namely, Archaeological Remains and Monuments, Inscriptions and Coins . Every trace of past human activity is an archaeological resource. These non-renewable resources are often the only tangible evidence of the passage or occupation of human groups that have disappeared or been displaced. Source literature is a term with different meanings. Literature (understood as printed texts) is one kind of information source. In a way, all literature is a kind of source literature. It might, for example, be cited and used as sources in academic writings. ... The meaning of "source literature" is relative.
Archaeological sources include buildings, houses, pottery, seals , coins, monuments , writings and paintings on stones or walls , tools, jewellery, bones, leftovers, pieces of metals and other artefacts