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 stone that are still operating at Golzinne and Mazy. It is noticeable that an almost jet black marble, similar to Nero Belgio occurs as ledger slabs in that later part of the 18th and early 19th century, an example being Dean Kaye's memorial in Lincoln Cathedral. Many other black ledger stones of the 17th to 19th. centuries have white flecking, which may also suggest that they come from Belgian sources. Neale notes references in the Hull Port in the 17th and 18th to the importation of ledger stones and draws comparisons between those in churches in Humberside and those in St