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Apparatus for Transmitting Sound-Waves

Description: Patent for transmitting sound waves by magnetic induction and to "furnish an apparatus by which these different vibrations can be heard at the receiving end" (lines 20-22). Includes descriptions and illustrations.
Date: October 17, 1911
Creator: Harvey, Fred Brown
Partner: UNT Libraries Government Documents Department

[Folsom State Prison ledger]

Description: Loose pages from a ledger documenting prisoners at Folsom State Prison, organized by prisoner number (8091-8186) and including mugshots with handwritten notes listing names, years imprisoned and crime(s), dates received and discharged/paroled, and other relevant information.
Date: 1911-09-08/1912-01-09
Creator: Folsom State Prison
Partner: UNT Libraries Special Collections

Bookbinding

Description: This is a letter patent for the bookbinding invention as a means for holding books, pamphlets, catalogs, and other similar paper materials together. The purpose of this invention is to make it possible to place additional material inside the same covers, and with the original contents of a book without breaking or tearing the binding.
Date: June 22, 1911
Creator: Robinson, Edward K.
Partner: UNT Libraries Government Documents Department
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