Keywords: Petardsketch2.tif Illustration of a petard from Sketchbook on military art including geometry fortifications artillery mechanics and pyrotechnics Library of Congresshttp //lcweb2 loc gov/cgi-bin/ampage collId rbc3 fileName rbc0001_2003rosen1363page db recNum 185 image 186 of 601 http //catalog loc gov/cgi-bin/Pwebrecon cgi DB local CMD lccn+ 2250032645 22 CNT 10+records+per+page Seventeenth century unknown possibly Italian Fully restored version of File Petardsketch jpg Dirt bleedthrough text and stains removed Radial brightness gradient and masked brightness adjustments Histogram adjusted and colors balanced See also File Petardsketch2 jpg full restoration compressed and File Petardsketch2 jpg full restoration compressed PD-art Petard |