Series of three drawings - Spinning mill; sections of an opening to be formed in the croy across the River Ericht - Blairgowrie, Perth - surveyed by David Stevenson., 1852., MS.5845 (34)-(36). Plans chiefly made by Messrs Stevenson, the Edinburgh civil engineers., MSS.5843-5896. National Library of Scotland Archives and Manuscripts Division. https://manuscripts.nls.uk/repositories/2/archival_objects/58682 Accessed June 11, 2024.