1732-1799 1744-1818 1754-1832 1768-1849 1793-1864 1819-1900 1885-1930 18thcentury 19thcentury 2008m-976 500 abigail adams americanrevolution(1775-1783) biography botanyclare botanycrabbe botanydarwin botanyinliterature botanylawrence botanyruskin darwin dolley englishpoetry erasmus exhibitions fiction generals generals'spouses george history historyandcriticism influencedarwin john knowledge knowledgeandlearningdarwin madison marriage marriagewashington marriedpeople martha medicine naturalsciencedisciplines natureinliterature perceptioninliterature philosophy philosophyofnatureinliterature plantationlife portraitpainting portraitswashington presidents presidents'spouses science technology unitedstates washington wz100d2283g2005