Printer John Shiels and his machine feeder, Peggy Lowe, using an old-fashioned flat-bed printing press with a lithographic stone, 1960s. © Permission of Collins Bartholomew
There is a Bartholomew lithographic stone in our collection at the National Library of Scotland. Lithographic stones could be huge, so when they fell out of use in the 1960s, they were destroyed.
There are rumours that some Edinburgh rock-gardens are made out of pieces of lithographic stone.
You can find out more about the maps printing process at the Bartholomew exhibition, which runs at the National Library of Scotland from 7 December 2012 to 7 May 2013.