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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

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
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