My latest article in the Canadian Encyclopedia is about Mercy Anne Coles, a diarist and one of the key witnesses to the negotiations that preceded Canada’s Confederation in 1867. Mercy Coles was one of the daughters of George Coles, the first premier of Prince Edward Island. She attended the Charlottetown and Québec Conferences with her parents. Her diary, Reminiscences of Canada in 1864, is one of the most detailed sources about the events that preceded Confederation. The diary includes descriptions of the Fathers of Confederation and their personalities and brings light to the social politics of mid-19th-century Canada.