The Colbeck collection was formed over half a century ago by the Bournemouth bookseller Norman Colbeck. Focusing primarily on British essayists and poets of the nineteenth century from the Romantic Movement through the Edwardian era, the collection features nearly 500 authors and lists over 13,000 works. Entries are alphabetically arranged by author with copious notes on the condition and binding of each copy. Nine appendices provide listings of selected periodicals, series publications, anthologies, yearbooks, and topical works.

The Critical Heritage gathers together a large body of critical sources on major figures in literature. Each volume presents contemporary responses to a writer's work, enabling students and researchers to read for themselves, for example, comments on early performances of Shakespeare's plays, or reactions to the first publication of Jane Austen's novels. The carefully selected sources range from landmark essays in the history of criticism to journalism and contemporary opinion, and little published documentary material such as letters and diaries. Significant pieces of criticism from later periods are also included, in order to demonstrate the fluctuations in an author's reputation. Each volume contains an introduction to the writer's published works, a selected bibliography, and an index of works, authors and subjects. The Collected Critical Heritage set will be available as a set of 68 volumes and the series will also be available in mini sets selected by period (in slipcase boxes) and as individual volumes.