Annual report of the Commissioner of Patents for the year ..
An annual report issued in 1866 by the United States Patent Office in Washington, published by the Government Printing Office for officials and inventors tracking patents granted that year. Its pages are grids of small engraved line drawings of machines, each labelled with a patent number, inventor and short title. A designer could draw on their orderly technical diagrams, numbered callouts and dense rectilinear layouts for industrial or systems graphics.
