There have been six accruals. The first is roughly divided into the following series: scripts for television plays and films, radio scripts, book manuscripts, scrapbooks containing clippings, engagements and 3 letters. The second accrual consists of McFarlane's first published essay, an I.O.D.E. 1918 Haileybury High School prize winner. The third, fourth, and fifth accruals have been combined. They contain correspondence, genealogical and biographical material, diaries, manuscripts, printed material, and photographs. The sixth accrual has been arranged into six series: manuscripts; sales and publication records, reviews, and profiles; correspondence; photographs; genealogical and family materials; and published books, magazine, and newspaper articles.