Denzil Dean Harber papers

Archive Collection

Scope and Content

The papers form four main sections, Left Opposition, Revolutionary Socialist League, Workers International League and the Revolutionary Communist Party.

Left Opposition includes the activities of the Balham Group, 1932-8, the ILP, and papers on Left Opposition in France and Germany.

Revolutionary Socialist League including Central Committee circulars and minutes, 1940-3, with correspondence between the International Secretariat of the Fourth International and the Revolutionary Socialist League; correspondence with the Workers International League regarding the question of fusion, 1940-3; the Revolutionary Socialist League international documents, including factional activity, c. 1942-3; the Revolutionary Socialist League conference documents, 1943; files regarding international questions, including miscellaneous Russian publications.

Workers International League comprises a file of papers, including draft constitutions, 1938 and 1942.

Revolutionary Communist Party includes a file of papers on redundancy and related issues, 1944-9. The are also some miscellaneous papers including a draft novel by D D Harber and a volume of press cuttings.

Administrative / Biographical History

Denzil Dean Harber (1909-66) was active in the British Trotskyist movement between 1932 and 1949, working successively in the Militant Group, the Revolutionary Socialist League (of which he was a secretary for a time) and the Revolutionary Communist Party.

Reginald Groves, The Balham Group : how British Trotskyism began (London : Pluto Press Ltd, 1974).  John Archer, Trotskyism in Britain 1931 - 37 (PhD Thesis, Central London Polytechnic, 1979).


The papers remain in the order in which they were received.

Conditions Governing Access

There are no restrictions on access to these papers.

Acquisition Information

This collection was deposited in the Centre by the Harber family in 1977.

Other Finding Aids

A copy of this collection-level is available in paper format in the Centre's searchroom, and at the National Register of Archives in London and in Chadwyck-Healey's National Inventory of Documentary Sources. A description of the papers is also to be found in Richard Storey and Janet Druker, Guide to the Modern Records Centre(Warwick, 1977).

An authority record exists for Revolutionary Socialist League (GB 0152 AAR1883), Denzil Dean Harber (GB 152 AAA1984), the Left Opposition (GB 0152 AAR1980), the Revolutionary Communist Party (GB 152 AAR1790), the Fourth International (GB 152 AAR1627), the Workers' International League (GB 0152 AAR1884).

Alternative Form Available

Photocopies of part of this collection are available at the Brynmor Jones Library at the University of Hull.

Conditions Governing Use

There are no restrictions on the use of this archive, apart from the requirements of copyright law.


Further deposits not expected.

Related Material

Researchers may also be interested in the papers of Henry Sara and Frank Maitland , (MSS.15) ; Ken Tarbuck (MSS.75) ; Harry Wicks (MSS.102) ; Colin Barker /International Socialism papers (MSS.152) and Reg Groves (MSS.17) all of which are held at the Centre.

The Labour History Archive and Study Centre at the John Rylands University Library of Manchester, holds the papers of the Communist Party of Great Britain and the Labour Party. Both collections include material on the Ultra Left.