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Part of letter that can be viewed at https://digital.library.illinois.edu/items/f5225bd0-a722-013b-454f-02d0d7bfd6e4-8
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The copy stand with plexiglass installed.
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Installing underlighting
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The transparency table without the legs.
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The 413 Copystand in its usual configuration.
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413 Copy Stand with the reflective top removed.
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Table used for digitizing translucent materials
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https://digital.library.illinois.edu/items/8ddfac60-24be-013c-48ae-02d0d7bfd6e4-7
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Backlit letter from: https://digital.library.illinois.edu/items/f50108a0-a722-013b-454f-02d0d7bfd6e4-a
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Page taken from letter online at:
https://digital.library.illinois.edu/items/8db117f0-24be-013c-48ae-02d0d7bfd6e4-1
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Available in the Digital Library at https://digital.library.illinois.edu/items/8ca71fa0-db09-013b-46a1-02d0d7bfd6e4-9
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Engraving of William Allingham
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From a letter found at https://digital.library.illinois.edu/items/8ccaf9e0-db09-013b-46a1-02d0d7bfd6e4-a
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An example of a luma curve used to highlight watermarks.
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The 413 Copystand in its usual configuration.
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An underlit letter with boosted contrast
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From a letter available at https://digital.library.illinois.edu/items/f4dda570-a722-013b-454f-02d0d7bfd6e4-6
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Variations on our first watermark capture attempt.
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Complete watermark setup with item on plexi