Ephraim Dienard best describes the rarity of the tractates in the late 19th and early 20th century (Atikos Yehudah p. 42): “I doubt the existence of greater than three complete sets in the world. The tractates utilized in yeshivas were torn and lost. Especially rare to find are complete volumes of the following tractates: Berakhot, Bezah, Sabbath, Chagigah, Gittin, Kiddushin, Ketubbot, the three Bavaos. The majority of tractates in Jewish Theological Seminary (New York), Hebrew Union College (Cincinnati), University of California in San Francisco, Library of Congress are of my doing, complete ones not to be found.” Needless to say conditions have not improved in the 21st century, the Holocaust and Jewish perils have only added to the scarcity of these volumes.