File consists of manuscript leaves previously bound with MSG 432-4, a letter book of correspondence signed alternately William Grant, William Grant & Co., Grant & Laframboise, or C. Laframboise. Leaves are of laid paper written in a variety of hands. Addressees of letters include Augustin Choteau, Stanbridge & Tagg, Brickwood & Daniell, John Blackwood, and McTavish, Fraser, & Co. Some letters include goods (for example, types of furs) and calculations. Dates of letters range from August 1798 to March 1800.

File consists of a bound manuscript letter book, missing preliminary leaves found in MSG 432-3. The letter book contains copies of correspondence signed alternately William Grant, William Grant & Co., Grant & Laframboise, or C. Laframboise. Leaves are of laid paper written in a variety of hands. Addressees of letters include Blackwood & Patterson, John Lean & Co., Brickwood & Daniell, and Thomas Coffin. Some letters include goods (for example, types of furs) and calculations. Dates of letters range from March 1800 to August 1801. The letter book was used also as a scrapbook, with transfer of ink and residue of printed pages stuck to leaves and four final leaves at end of letter book containing cut-out images pasted in. Two leaves towards the end contain accounting information and another two leaves contain a recipe for ginger beer, a poem, and a remedy for curing diseases of fruit and forest trees.

Collection consists of three items relating to Saint Helen's Island (Île Sainte-Hélène), located southeast of the Island of Montreal in the Saint Lawrence River. The items relate to the island's military installations, built as defenses for the city of Montreal as a result of the War of 1812 and used as a munitions depot for the British Army and later a garrison, arsenal, and military prison operated by the Canadian Army. Items include a manuscript entitled, "Military Defences. St. Helen's Island - Barons of Longeuil," written by Charles Walkem, August, 1873; "Plan of Isle St. Helens," an undated map on linen paper, with a key pointing out the military installations; and "The Fort, St. Helen's Island," a 4-page pamphlet containing schematics and descriptions of the island's fort as well as a history of the island dating from 1611 to the 1960s. The pamphlet cover photograph features a soldier of the Royal Artillery, Saint Helen's Island Fort, circa 1865. Part of the manuscript document also deals with the hereditary Barony of Longueuil.

Consists of loose leaf manuscript notes in various hands (predominantly Taylor White's) describing the fish and reptiles depicted in Volume 1. Transcriptions and English translations of individual notes are provided within the record for each animal.

Consists of loose leaf manuscript notes in various hands (predominantly Taylor White's) describing the birds depicted in Volume 16. Transcriptions and English translations of individual notes are provided within the record for each animal.

Consists of loose leaf manuscript notes in various hands (predominantly Taylor White's) describing the birds depicted in Volume 15. Transcriptions and English translations of individual notes are provided within the record for each animal.