Learn how to engage with professionals for your NHD project.
Learn about secondary sources and their role in NHD projects.
Learn about primary sources and their role in NHD projects.
Learn how to use the tools provided by the Library of Congress for your NHD project.
Watch this video to learn how to search the Library of Congress.
Watch this video to learn how search effectively and efficiently.
Learn how to use Google Books during the research process for your NHD project.
Watch this video to learn how to effectively use Wikipedia.
Watch this video to learn how to trace back and find primary sources from secondary sources.
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Attention teachers: Apply now for one of NHD's 2025/2026 Silent Hero professional development programs! Applications are open through Wednesday, August 13.
Learn more and apply now.
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