Secondary sources are accounts of the past created by people writing about events after they happened (this could be a few years later or centuries later). In other words, secondary sources are what historians (and History Day participants) create.
Historians' creations usually come in the form of books and journal articles. They are an analysis and interpretation of the past based on evidence provided by primary sources. Some examples of secondary sources are:
Secondary sources are useful to:
Academic articles, those published in scholarly journals, are the bedrock of most academic disciplines. In the field of historical research, they are considered secondary sources. They provide an indepth analysis of narrow topics. Prior to publishing, articles are vetted through a process called peer-review. Most articles include footnotes which can lead you to other material on a topic.