Boris Sapir (ed), 'Vpered!' 1873-1877. From the Archives of Valerian Nikolaevich Smirnov. Vol i On the History of 'Vpered!'. Dordrecht: Reidel, 1970. ISBN 90-277-0163-6, 403 pp. Vol ii Documents. Dordrecht: Reidel, 1970. ISBN 90-277-0164.4, 556 pp.
Boris Sapir (ed), Lavrov - Years of Emigration. Letters and Documents in two volumes. Dordrecht: Reidel, 1974. ISBN set vols i and ii 90-277-0453-8 Vol i Lavrov and Lopatin (Correspondence 1870-1883). Dordrecht: Reidel, 1974. ISBN 90-277-0384-1, lx + 603 pp. Vol ii From 'Vpered!' to the Group of the Narodovol'tsy. Dordrecht: Reidel, 1974. ISBN 90-277-0443-0, xix + 669 pp.
Boris Sapir (ed), Fedor Il'ic Dan, Pis'ma (1899-1946): otobral, snabdil primecanijami i ocerkom polititceskoj biografii Dana [Fedor Il'ic Dan, Letters (1899-1946): selection, anotation and political biography of Dan]. Amsterdam: Stichting Beheer IISG, 1986. ISBN 90-6861-002-3 lviii + 678 pp.
Boris Sapir (ed), Iz Archiva L.O. Dan [From the archives of L.O. Dan]. Amsterdam: Stichting Beheer IISG, 1987. ISBN 90-6861-011-2 xxxii + 209 pp.
Jansen, Marc (ed), Partija Socialistov-Revoljucionerov posle oktjabr'skogo perevorota 1917 g. Dokumenty iz archiva PSR [The Socialist-Revolutionary Party after the October Revolution of 1917. Documents from the Archives of the PSR]. Amsterdam: Stichting Beheer IISG, 1989. ISBN 90-6861-039-2, xxiv + 772 pp.
