See Harold P. Scanlin, “The History of Codex Leningradensis,” an unpublished paper prepared for the United Bible Societies committee working on BHQ; see also Abraham I. Katsh, Ginze Mishna (Jerusalem: Mossad Harav Kook, 1970); Katsh, Ginze Russiyah (New York: New York Library of Judaica and Hebraica, 1957–1958); and I. Yeivin, “The New Edition of the Biblia Hebraica—Its Text and Massorah,” Textus 7 (1969), pp. 114–123.