Alexander Dingwall: letter book Letter book, unsigned but presumed to belong to Alexander Dingwall. Aberdeen. 8 July 1773 – 23 December 1775. The book contains copy entries in various hands, on personal and business matters. The addressees include: William Dingwall of Brucklay (several, on business matters, tenancies etc.) Arthur Dingwall, jeweller in Edinburgh, son of William Dingwall of Brucklay John Dingwall, Turriff Large folio labelled Letter Book No.3, with index at start 1773 - 1775