David Rumsey Map Collection
Historical worldwide map collection with over 150,000 maps and images online.
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Dead Fred
A website of identified and mystery photographs. If you find a photo of a direct ancestor, it's yours, for free.
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Death, Causes of
ICD codes (International Classification of Diseases). These numbers often appear on death certificates for cause of death. Pay attention to the date of the death cert to determine which ICD you should be using.
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DeepL Translate
Key in or type in text or paste in a Word or PowerPoint document. It was developed in Germany and is especially good for German. More than twenty languages available.
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Digital Public Library of America
Discover millions of images, texts, videos, and sounds from across the United States.
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Digital Public Library of America
DPLA is like a library catalog of freely viewable online documents, books, photographs, maps, and so forth from many libraries, archives, and museums across America. They call themselves a portal rather than a catalog because they have a rich search experience that includes timeline, map, format, partner, and subject.
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DNA Painter
Useful tools for DNA analysis including the Shared cM Project, What Are the Odds?, and a chromosome painter.
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DNA Science
Tools for DNA match analysis.
Click here.