Dating back to 1857, The Christian Association (a.k.a. The CA) is the oldest religious organization at the university and is composed primarily of students from Mainline Protestant backgrounds. When the University moved to its current campus in the 1880s the CA was based in Houston Hall. After moving around several times it relocated to building at 36th and Locust Streets, which it built and owned (now the ARCH Building), and occupied from 1928 until 2000. The CA ran several foreign missions including one of lasting import when in 1906 it financed University of Pennsylvania School of Medicine graduate, Josiah McCracken, MD, trip to China to investigate the viability of operating the medical department of the Canton Christian College (now known as Lingnan University (Guangzhou)). The following year, Dr. McCracken moved to China and renamed the department as "The University Medical School in Canton, China," and served as its president from the time of renaming through the date in 1913 when the CA ended its affiliation with the Canton Christian College. The CA