Subject: Inventors

A sketch book created by the boys and girls of Pittsburg, featuring illustrations of great inventors. The back cover displays a large color illustration of Kaufmann's department store. Published circa 1910.

A letter written by David G. Barnitz on June 22, 1867, from New York, New York, concerning a claim against the U.S. Quartermaster Department. The letter details a cancelled order for ponchos and tents, referencing an inventor and manufacturer, Mr. Day, whose patterns were involved. Barnitz appears to be writing on Day's behalf.

This issue of *Scientific American*, dated February 10, 1866, features a full-page article with illustrations on Solomon Nunes Carvalho's apparatus for super-heating steam. The article details the design and functionality of Carvalho's invention, likely providing technical specifications and diagrams. This periodical offers insight into 19th-century engineering and the contributions of a prominent Jewish inventor.