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  <leader>04004cpcaa2200697 a 4500</leader>
  <controlfield tag="001">mm 75011494 </controlfield>
  <controlfield tag="003">DLC</controlfield>
  <controlfield tag="005">20260227111615.0</controlfield>
  <controlfield tag="007">cr |||||||||||</controlfield>
  <controlfield tag="008">760517||||||||||||                 eng  </controlfield>
  <datafield tag="010" ind1=" " ind2=" ">
    <subfield code="a">mm 75011494 </subfield>
    <subfield code="b">ms 62004858 </subfield>
    <subfield code="z">mm 84000750 </subfield>
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  <datafield tag="040" ind1=" " ind2=" ">
    <subfield code="a">DLC</subfield>
    <subfield code="c">DLC</subfield>
    <subfield code="e">dacs</subfield>
    <subfield code="d">DLC</subfield>
  </datafield>
  <datafield tag="072" ind1=" " ind2="7">
    <subfield code="a">S</subfield>
    <subfield code="2">lcmd</subfield>
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  <datafield tag="100" ind1="1" ind2=" ">
    <subfield code="a">Bache, A. D.</subfield>
    <subfield code="q">(Alexander Dallas),</subfield>
    <subfield code="d">1806-1867.</subfield>
  </datafield>
  <datafield tag="245" ind1="0" ind2="0">
    <subfield code="a">A.D. Bache papers,</subfield>
    <subfield code="f">1828-1863</subfield>
    <subfield code="g">(bulk 1836-1863).</subfield>
  </datafield>
  <datafield tag="300" ind1=" " ind2=" ">
    <subfield code="a">2,000</subfield>
    <subfield code="f">items.</subfield>
  </datafield>
  <datafield tag="300" ind1=" " ind2=" ">
    <subfield code="a">18</subfield>
    <subfield code="f">containers.</subfield>
  </datafield>
  <datafield tag="300" ind1=" " ind2=" ">
    <subfield code="a">5</subfield>
    <subfield code="f">microfilm reels.</subfield>
  </datafield>
  <datafield tag="300" ind1=" " ind2=" ">
    <subfield code="a">7.2</subfield>
    <subfield code="f">linear feet.</subfield>
  </datafield>
  <datafield tag="506" ind1="0" ind2=" ">
    <subfield code="a">Open to research.</subfield>
  </datafield>
  <datafield tag="520" ind1="8" ind2=" ">
    <subfield code="a">Correspondence, a journal, scrapbooks of newspaper clippings, a partial index, and miscellaneous material reflecting Bache's service as superintendent of the United States Coast Survey (1843-1867), member of the U.S. Light-House Board, and U.S. superintendent of weights and measures, his work at the Dudley Observatory in Albany, N.Y., and his European trip as president of the proposed Girard College to study educational methods.</subfield>
  </datafield>
  <datafield tag="520" ind1="8" ind2=" ">
    <subfield code="a">Topics include the survey's publication of navigation charts and maps of the East Coast of the U.S., astronomical research, scientific developments, and foreign affairs.  Correspondents include John J. Crittenden, John Adolphus Bernard Dahlgren, James Dwight Dana, Charles Henry Davis, George W. Dean, Blandina Bleecker Dudley, Benjamin Apthorp Gould, Joseph Henry, Benjamin Peirce, Benjamin Silliman, Jr., and George E. Waring.</subfield>
  </datafield>
  <datafield tag="530" ind1=" " ind2=" ">
    <subfield code="a">Microfilm edition of part of these papers available,</subfield>
    <subfield code="d">no. 16,511.</subfield>
  </datafield>
  <datafield tag="533" ind1=" " ind2=" ">
    <subfield code="a">Microfilm produced from originals in the Manuscript Division.</subfield>
    <subfield code="b">Washington, D.C. :</subfield>
    <subfield code="c">Library of Congress Photoduplication Service,</subfield>
    <subfield code="d">1975.</subfield>
  </datafield>
  <datafield tag="544" ind1=" " ind2=" ">
    <subfield code="3">Some maps</subfield>
    <subfield code="e">transferred to</subfield>
    <subfield code="a">Library of Congress Geography and Map Division.</subfield>
  </datafield>
  <datafield tag="544" ind1=" " ind2=" ">
    <subfield code="3">Photograph</subfield>
    <subfield code="e">transferred to</subfield>
    <subfield code="a">Library of Congress Prints and Photographs Division.</subfield>
  </datafield>
  <datafield tag="545" ind1="0" ind2=" ">
    <subfield code="a">Scientist, educator, and superintendent of the United States Coast Survey.</subfield>
  </datafield>
  <datafield tag="546" ind1=" " ind2=" ">
    <subfield code="a">Collection material in English.</subfield>
  </datafield>
  <datafield tag="555" ind1="8" ind2=" ">
    <subfield code="a">Finding aid available in the Library of Congress Manuscript Reading Room and at</subfield>
    <subfield code="u">http://hdl.loc.gov/loc.mss/eadmss.ms007077</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Crittenden, John J.</subfield>
    <subfield code="q">(John Jordan),</subfield>
    <subfield code="d">1787-1863</subfield>
    <subfield code="v">Correspondence.</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Dahlgren, John Adolphus Bernard,</subfield>
    <subfield code="d">1809-1870</subfield>
    <subfield code="v">Correspondence.</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Dana, James Dwight,</subfield>
    <subfield code="d">1813-1895</subfield>
    <subfield code="v">Correspondence.</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Davis, Charles Henry,</subfield>
    <subfield code="d">1807-1877</subfield>
    <subfield code="v">Correspondence.</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Dean, George W.</subfield>
    <subfield code="q">(George Washington),</subfield>
    <subfield code="d">1825-1897</subfield>
    <subfield code="v">Correspondence.</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Dudley, Blandina Bleecker,</subfield>
    <subfield code="d">1783-1863</subfield>
    <subfield code="v">Correspondence.</subfield>
  </datafield>
  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Gould, Benjamin Apthorp,</subfield>
    <subfield code="d">1824-1896</subfield>
    <subfield code="v">Correspondence.</subfield>
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  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Henry, Joseph,</subfield>
    <subfield code="d">1797-1878</subfield>
    <subfield code="v">Correspondence.</subfield>
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  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Peirce, Benjamin,</subfield>
    <subfield code="d">1809-1880</subfield>
    <subfield code="v">Correspondence.</subfield>
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  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Silliman, Benjamin,</subfield>
    <subfield code="d">1816-1885</subfield>
    <subfield code="v">Correspondence.</subfield>
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  <datafield tag="600" ind1="1" ind2="0">
    <subfield code="a">Waring, George E.</subfield>
    <subfield code="q">(George Edwin),</subfield>
    <subfield code="d">1833-1898</subfield>
    <subfield code="v">Correspondence.</subfield>
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  <datafield tag="610" ind1="1" ind2="0">
    <subfield code="a">United States.</subfield>
    <subfield code="b">Light-House Board.</subfield>
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  <datafield tag="610" ind1="2" ind2="0">
    <subfield code="a">Dudley Observatory.</subfield>
  </datafield>
  <datafield tag="610" ind1="2" ind2="0">
    <subfield code="a">Girard College</subfield>
    <subfield code="x">Presidents.</subfield>
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  <datafield tag="610" ind1="2" ind2="0">
    <subfield code="a">United States Coast Survey.</subfield>
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  <datafield tag="650" ind1=" " ind2="0">
    <subfield code="a">Astronomy</subfield>
    <subfield code="x">Research.</subfield>
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  <datafield tag="650" ind1=" " ind2="0">
    <subfield code="a">Discoveries in science.</subfield>
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  <datafield tag="650" ind1=" " ind2="0">
    <subfield code="a">Education</subfield>
    <subfield code="z">Europe</subfield>
    <subfield code="x">Methodology.</subfield>
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  <datafield tag="650" ind1=" " ind2="0">
    <subfield code="a">International relations.</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2="0">
    <subfield code="a">Navigation</subfield>
    <subfield code="z">Atlantic Coast (U.S.)</subfield>
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  <datafield tag="650" ind1=" " ind2="0">
    <subfield code="a">Weights and measures</subfield>
    <subfield code="z">United States.</subfield>
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  <datafield tag="651" ind1=" " ind2="0">
    <subfield code="a">Atlantic Coast (U.S.)</subfield>
    <subfield code="v">Maps.</subfield>
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  <datafield tag="651" ind1=" " ind2="0">
    <subfield code="a">Europe</subfield>
    <subfield code="x">Description and travel.</subfield>
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    <subfield code="a">Educators.</subfield>
    <subfield code="2">itoamc</subfield>
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    <subfield code="a">Scientists.</subfield>
    <subfield code="2">itoamc</subfield>
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    <subfield code="3">Finding aid</subfield>
    <subfield code="u">http://hdl.loc.gov/loc.mss/eadmss.ms007077</subfield>
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  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="3">Finding aid (PDF)</subfield>
    <subfield code="u">http://hdl.loc.gov/loc.mss/eadmss.ms007077.3</subfield>
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    <subfield code="c">39323</subfield>
    <subfield code="d">39323</subfield>
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