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
American Letter Mail Company American Letter Mail Company The American Letter Mail Company was started by Lysander Spooner in 1844, competing with the presumed legal monopoly of the United States Post Office (USPO, now the USPS). Spooner started the service out of frustration with the exceedingly high postal rates. It cost 18 3/4 cents to send a letter from Boston to New York and 25 cents to send one all the way to Washington DC. A letter sent from Boston to Albany, NY written on a 1/4-ounce sheet of paper and carried by the Western Railroad, cost 2/3 as much as the freight charge