Vol. 1 (1931)--v. 22 (1953) are digital versions of the reprint ed. published: New York : Johnson Reprint Corp., 1965. 2nd ser., v. 1 (1954)-v. 13 (1966) are digital versions of the reprint ed. published: Germantown, N.Y. : Periodicals Service Co., 2001.
Published: Cambridge : Cambridge University Press, 2006-