This fonds consists of records encompasing three generations of the Boyd family of Bobcaygeon. The fonds has been divided into the following series: photographs and glass negatives; Reverend Henry C. Avant; Mossom Boyd; Mossom Martin Boyd (Mossie); Lillian de Grassi Boyd; the De Grassi papers which are records of Dr. Alex De Grassi, Lillian Boyd's father, a physician from Lindsay, Upper Canada; Gardiner Cust Boyd; Mildred Boyd; Winnett (Brownie) Boyd; Laurence Chadwick Boyd; Mossom de Grassi Boyd; A. Sheila Boyd; stamps; artifacts; business which deals with the Boyds interests in lumbering; agricultural papers which deal with the Boyd's farming interests in buffalo and cattle; and, estate papers. The strength of this fonds lies in its completeness. Nothing was thrown away and there are grocery lists, laundry lists, staff salary books, furniture receipts, party and wedding invitations, school report cards, ship and railway timetables, diaries and approximately 20,000 pieces of correspondence. This has resulted in a remarkable record of a large household from the 1880s to the 1980s and an invaluable source for social and business historians.