Liberal archives at the University of Bristol Library.

Liberal archives at the Bodleian Library, University of Oxford.

Liberal Party collections in the Coventry archives. London Liberal Foundation and the London Liberal Party records in the London Metropolitan Archives.

The Beveridge archives at the London School of Economics Library.

Sources in the Manuscript Division of the National Library of Scotland.

Project to catalogue the papers of Richard Wainwright and David Steel at the British Library of Political and Economic Science.

The David Owen papers at the University of Liverpool.

Liberal history archives at Manchester Archives and Local Studies.