`Perhaps the most important historical undertaking of our age ... one of the most valuable historical works ever produced.' - Times Literary Supplement

`This mighty enterprise does high honour to the publishers and to the general editor.' - Sunday Times

`A landmark in the field of historical endeavour ... the most admirable collection of sources on English history that exists.' - American Historical Review

`An important landmark in historical studies in this country.' - Daily Telegraph

`This series of immense volumes promises to be one of the most valuable contributions of modern times to historical scholarship.' - Spectator

`The series has been widely recognized as one of the major achievements of English historical scholarship in the post-war period.' - Manchester Guardian