The fonds consists of manuscripts, research materials, correspondence, financial documents, photographs, maps, audio reels, and a video cassette. There have been fourteen accruals. The first accrual is organized into the following series: manuscripts, research material, miscellaneous files, correspondence, personal papers--journals and financial records. The second and third accruals have been combined and consist of: manuscripts, research files, speeches, reviews, printed materials, correspondence. The fourth accrual is roughly organized into the following series: manuscripts, research materials, correspondence, financial material, printed materials, photographs. The fifth accrual is arranged into the following series: correspondence, financial, manuscripts. The sixth accrual is arranged into the following series: correspondence, business files, manuscripts. The seventh accrual (01-1992) is arranged into the following series: manuscripts, correspondence, financial. The eighth accrual (02-1993) is arranged into the following series: manuscripts and correspondence. The ninth accrual (10-1997) is arranged into the following series: correspondence, research, manuscripts, typescripts and proofs, manuscripts by others, photographs, printed materials and video cassette, financial. The tenth accrual (08-2000) is arranged into the following series: correspondence, financial, graphic illustration, photographs and printed materials, manuscripts, typescripts and proofs, manuscripts by others, personal and journals. The eleventh accrual (38-2000) consists of 67 letters from Mowat to his son, Robert Alexander (Sandy) Mowat, written between 1961 and 1978. The twelfth accrual (10-2001) consists of letters between Mowat and his editor, Peter Davison. The thirteenth accrual (20-2001) consists of the following series: correspondence, personal, research material, manuscripts, and published material. The fourteenth accrual (18-2003) consists of the following series: manuscripts, correspondence, research material, and manuscripts by others. The fifteenth accrual (17-2006) consists of correspondence, financial material, manuscripts, causes and invitations, reviews, fan mail, audio reels, a video cassette, and art work.
