Aberdeenshire Commissioners of Supply: Robertson's Map Papers - Letter from Irvine Ross to Thomas Burnett requesting he correspond with Archibald Young to inform him of the time Ross spent examining Robertson's map, and what he should be paid (1825) Also states that he be allowed to have a look at the remarks on Robertson's map to assist him in preparing maps of Aberdeen, Banff and Moray counties for Thomson's Atlas of Scotland. 3 March 1825