Little blue book

found: Powys, John Cowper. The secret of self development, 1926:t.p. (Little blue book)

found: Weaver, George H. Measles, diphtheria, scarlet fever, chichen pox, and whooping cough, c1924:t.p. (Little blue book) verso of t.p. (Little blue book health series, edited by Morris Fishbein, M.D.)

found: Bibliographical Society of America. Papers of the Bibliographical Society of America, v. 64, 1st quart., 1970:p. 48 (Little blue book; Little blue books; Appeal's pocket series; Appeal pocket series; People's pocket series; Pocket series, Ten cent pocket series; Five cent pocket series)

found: Primitive beliefs, c1921:t.p. (People's pocket series no. 184; publisher given as: "Appeal to reason, Girard, Kans.") variant copy has, t.p. (Little blue book no. 184; publisher given as: "Haldeman-Julius Company, Girard, Kansas")

found: What the woman past forty should know, c1928:t.p. (Little blue book, no. 536) verso of t.p. (Rational sex series, Vol. XIII, by William J. Fielding)

found: Tuberculosis, c1925:t.p. (Little blue book, no. 870) verso of t.p. (Haldeman-Julius health series; edited with the advice of Dr. Morris Fishbein, editor of the Journal of the American Medical Association)

[Last title change of a series represented by Little blue book, Appeal's pocket series, People's pocket series, Ten cent pocket series, Five cent pocket series, Pocket series. All classed together with Little blue book.]
[Prior to Dec. 12, 1957, the series was classified separately and analyzed in full. All such items found on MUMS or PREMARC have been added to the collected set]
[See Bibl. Soc. of Amer. Papers, v. 64 (1970), p. 29-79 for lists and chronologies aiding in understanding title changes and numb. duplications in this series; also see the article by Lenore Anderson, entitled, "Haldeman-Julius: Little Blue books, 50th Anniversary," Amer. book collector, XIX (April-May, 1969), p. 11-13.]
[N.B. When date is missing from copyright notice, impression is a later one than first]