There have been sixteen accruals. The first accrual consists of manuscripts, research materials, photographs, newspapers and news clippings, maps, and correspondence. The second accrual consists of manuscripts, research files, and correspondence. The third accrual consists of manuscripts, research materials, Heritage Canada materials and correspondence. The fourth accrual consists of manuscripts and correspondence. The fifth accrual consists of manuscripts, correspondence, Heritage Canada materials, and Berton Celebration dinner. The sixth accrual consists of manuscripts and correspondence.The seventh accrual consists of correspondence including some early family correspondence, juvenilia and journals, and manuscripts. The eighth accrual consists of manuscripts and correspondence. The ninth accrual consists of correspondence, manuscripts, newspaper columns, news clippings. The tenth accrual (03-1998) measures 7.1 m, consists of correspondence, manuscripts, and printed materials, 1898-1998; 1994-1996 predominant. The eleventh accrual (05-1999 and 19-1999) measures 12.9 m and consists of the following: correspondence, media, contracts, manuscripts, speeches, promotional material, printed material, public relations, personal, research files and other material, artwork, photographs and audio-visual materials. The twelfth accrual (16-2002) measures 6m and consists of correspondence, royalty statements, photographs, clippings, manuscripts and research material. The thirteenth accrual (50-2007) has been arranged into nine series: books, articles, and other writings; public appearances; correspondence; pocket diaries and address book; subject files; news clippings; drawings, photographs and sound recordings; oversized materials. The fourteenth accrual (52-2008) consists of 4 letters to and from T.G. Reed. The fifteenth accrual (2012-001) consists of early writings, contracts, personal and awards, research material, chronological files, printed material, correspondence, photographs and sound recordings. The sixteenth accrual (2013-040) consists of writings; correspondence; personal, art work and graphic publications; subject files and photographs, graphic and printed materials.