There have been seven accruals. The first accrual consists of: manuscripts and typescripts of some published works; literary correspondence; and typescripts and related correspondence pertaining to specific poetry. It is divided into two series: manuscripts and typescripts; and literary correspondence, which is divided into two subseries (correspondence relating to individual poetry books; and general literary correspondence). The second accrual consists correspondence and manuscripts arranged into three series: Harbinger Poetry, the Literary Review of Canada and Levenson's collected poems. The third accrual consists of four series: collected poems; manuscripts and typescripts; other literary activities; correspondence. The fourth accrual consists of four series: manuscripts, collected poems, sound recording, personal and literary correspondence. The fifth accrual consists of three series: writings, correspondence, and other work. The sixth accrual contains writing and correspondence. The seventh accrual consists of the collected poems for Levenson's thirteenth volume of poetry, as well as correspondence, recordings, and teaching material. The eighth accrual consists of the collected poems for Levenson's fourteenth volume poetry, correspondence, recordings, reviews.