The collection consists of two volumes
of carbon copy letterbooks owned by Dain L. Tasker, an early faculty member of the Pacific
School of Osteopathy and Infirmary (later the California College of Medicine, incorporated
into the University of California, Irvine). Tasker's books represent outgoing correspondence
from 1900-1906 and 1913-1938 of this faculty member of the College, who instigated the
recognition of the separate D.O. degree in 1914.