The librarians of the Art & Architecture Library are always looking for historical, out-of-print, or otherwise interesting periodicals to add to the Locked Stacks collection. Here are four titles that we've recently acquired: two dedicated to German graphic arts (Die Graphischen Kunste and Das Plakat), one focused on contemporary artistic culture (Esopus), and one that provides of glimpse of the early 1970s avant-garde (Chroniques de l'art vivant). Periodicals such as these are important--and fun--to collect: they not only, in their relative longevity of publication, trace the development of ideas and themes over time; they also serve as evidence of important, and often brief, counter-cultural moments. The publication of journals has historically been a favored means for groups to promote their causes and their artwork, and therefore the journals serve as key primary sources for art historical research.