Patent granted to William M. Henderson of Philadelphia for "improvements in the mode of constructing and operating direct-action independent steam engines." F.  is the patent itself on an engraved form, with the hand signature of Secretary of the Interior W.I. Otto; f.  is a drawing, with some coloring in blue and red, of the device as improved upon, and [3?4] is Henderson's official description of it. . Folio (appr. 50 ? 27 cm, 20" ? 14.5").  ff. Laced together with a silk ribbon. Some small spots of browning on drawing and elsewhere adjacent to ribbon; a little soiling exterior and along edges; and a few tiny tears in edges. Bookseller Inventory #
Title: Patent No. 53,613: Improvement in steam ...
Publisher: United States Patent Office
Publication Date: 1866
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