The ASP publishes The Bulletin of the American Society of Papyrologists (BASP), the only North American journal in the field of papyrology. The Society maintains an extensive back list for BASP. The University of Michigan Library now maintains an electronic archive of BASP from Vol. 1 (1963/4).
American Society of Papyrologists monographs and supplements are distributed by the University of Michigan Press, www.press.umich.edu.
Outside of North America, kindly contact the Eurospan Group, www.eurospangroup.com.