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Start Over You searched for: Subject Astronomers--United States--19th--century--Correspondence. Remove constraint Subject: Astronomers--United States--19th--century--Correspondence. Names Alexander, Stephen, 1806-1883 Remove constraint Names: Alexander, Stephen, 1806-1883 Date range 1870 to 1874 Remove constraint Date range: <span class='from'>1870</span> to <span class='to'>1874</span>

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