Printed invitations to WIlliam Blackwood to functions at the Palace of Holyrood House., c 1900., MS.30071, folios 223-224. Papers of William Blackwood and Sons., MSS.30001-30984. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/33576 Accessed September 23, 2024.