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Brief History of Colby College – Online exhibit in the Maine Memory Network, a statewide database administered by the Maine Historical Society
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Mayflower Hill: A History of Colby College (Earl Smith, 2006) – Read the digital edition, download as PDF, or link to the Colby Bookstore to purchase a copy.
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Colbiana photographs in Artstor – Images added regularly.
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The Colby Echo online – Keyword search Echo issues from 1877 through 2006.