Family Relationship of

Melvil Dewey

Inventor of the Dewey Decimal System

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Astronomer and Aviation Pioneer

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Thomas Ford

Hepzibah Ford

Joanna Ford

Hepzibah Lyman

Samuel Clap

John Dewey

Elizabeth Clap

Jonathan Dewey

Samuel Sumner

Aaron Dewey

Mary Sumner

Eleazer Dewey

John Williams

David Dewey

Mary Sumner Williams

Samuel Langley

Joel Dewey

Eliza Green

Samuel Pierpont Langley

Astronomer and Aviation Pioneer

Melvil Dewey

Dewey Decimal System