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Whereas, I, George P. Helfrish of Boston in the state of Massachusetts
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Whereas, Levi Newcomb of Boston, Suffolk County
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Image of a certificate granting one quarter share of letters patent number 364,844 from Levi Newcomb and William H. Lewis to Louis Prang; official seal and signatures below.
priJLC_PRG_002324

United States patent office. Louis Prang, of Boston, Massachusetts. Letters patent no. 104,996, dated July 5, 1870
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Image of a letters patent certificate issued to lithographer Louis Prang for improvement in library shears, with specification of his invention and detailed descriptions of the various parts of the shears.
priJLC_PRG_002320

Louis Prang. Library shears
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Image of a diagram of a pair of library shears for patent number "104996" invented by Louis Prang; signatures of witnesses, inventor, and patent attorneys Munn & Co. below diagram; letters patent certificate issued to lithographer Louis Prang for improvement in library shears affixed to verso.
priJLC_PRG_004360

The United States of America : to all to whom these letters patent shall come
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Image of an American bald eagle above the United States Patent Office in Washington, D.C., on a letters patent certificate "No. 55158" issued to lithographer Louis Prang certifying he "invented a new and useful improvement in the manufacture of caustic alkali" dated May 29, 1866; official seal and ribbon at bottom left.
priJLC_PRG_002325

The United States of America : to all to whom these letters patent shall come
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Image of a letters patent certificate "No. 104996" issued to lithographer Louis Prang certifying he "invented a new and useful improvement in library shears" dated July 5, 1870; goddess Columbia with American flag and bald eagle at the center of a scene featuring the industrial and agrarian sides of the United States; woman at left cards wool near a spinning wheel with machinery and an industrial city behind her; man at right holds a hand scythe and watches another farmer harvest a field with a horse team and machinery; official seal and ribbon at bottom left.
priJLC_PRG_002318

Louis Prang. Library shears
Visual Materials
Image of a diagram of a pair of library shears for patent number "104996" invented by Louis Prang; signatures of witnesses, inventor, and seal from patent attorneys Munn & Co. below diagram.
priJLC_PRG_002319