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Ihlenburg, Hermann, 1843-190
WHAT
still image (13)
manuscripts (10)
Alphabets (8)
Design patents (8)
Graphic arts - United Sta (8)
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WHERE
Pennsylvania - Philadelph (3)
Philadelphia - Pennsylvan (3)
WHO
Ihlenburg, Hermann, 1843 (13)
United States Patent Offi (8)