A collection of documents from the life of Simon McTavish including a letter to his creditors and a series of legal opinions on the estate of Simon and William McGillivray. Documents' informational value is largely financial in nature.

File contains several lengthy documents of legal opinion and counter-opinion on the financial holdings and debts of the estate of Simon and William McGillivray in Canada and England.

This material comprises a group of official documents, and correspondence among various partners. The official documents include four articles of agreement for partnership between various Montréal companies, largely with McTavish, Frobisher and Co., 1790-1802, and a memorandum on the effect of exchange differences on the partners' shares (approximately 1826). The partners' correspondence, approximately 1792-1808, contains letters from Simon McTavish, Isaac Todd, and Alexander Mackenzie concerning provisions, business agreements and loans. A letter from William McGillivray to Mr Justice Reid discusses family matters. One financial ledger for the North West Company contains business accounts and records transactions. The bulk of entries are dated from January 1810 to November 1825, with some entries dated 1861.

Fonds contains mainly J.E. Buchanan's correspondence, notably his correspondence with Phyllis Buchanan prior to their marriage, newspaper clippings, agendas and administrative paperwork concerning Phyllis Buchanan and her family, with material related for the First World War and children education in the first half of the 20th century.