Paper size impossible to encounter ISO standard papers in day-to-day uses, with "Carta" (Letter), "Oficio" (Government-Legal) and "Doble carta" (Ledger/Tabloid) being nearly universal. In Canada, US paper sizes are a de facto standard. The government, however, also uses ISO paper sizes. There is an additional paper size, , to which the name "Government-Letter" was given by the IEEE Printer Working Group (PWG). It was prescribed by Herbert Hoover when he was Secretary of Commerce to be used for US government forms, apparently to enable discounts from the purchase of paper for schools, but more likely due to the standard use of trimming
Ledger art this style to illustrate cultural continuity between historical and contemporary Native life. Missionaries, anthropologists, and tourists eagerly collected ledger books in the late 19th century. Carl Sweezy (1881–1953) (Arapaho) and "Haungooah" (Silver Horn) (1860–1940) (Kiowa) both established professional careers as ledger artists. They inspired the Kiowa Five or, as they are increasingly known, the Kiowa Six. These artists painted with more sophisticated materials and met with international success when they exhibited their work in the 1928 International Art Congress in Prague, Czechoslovakia. Numerous modern Plains artists create ledger paintings, including many women artists despite its history as a male domain.