ワシントン焼き討ち
↑ Brief History of the United States Patent Office from its foundation—1790 to 1886—with an outline of laws, growth, publications, office routine, etc.. Washington, D.C.: R. Beresford, Printer. (1886). オリジナルの2012年4月15日時点におけるアーカイブ。. https://web.archive.org/web/20120415010547/http://www.myoutbox.net/pobere.htm 2011年12月16日閲覧。 It is written that a loaded cannon was aimed at the Patent Office to destroy it.