Dain Tasker, D.O., valedictorian of the first class of PSO in 1898, became a major advocate for osteopathy in California as well as its invaluable historian. Dr. Tasker based many of his historical accounts on documentations in The Osteopath. To educate other health practitioners and the public on osteopathy, they started publication of a monthly journal, The Osteopath, as early as July 1896. After his graduation in 1898, Dain Tasker, D.O. was immediately recruited to teach theory and practice of osteopathy. This was quite a challenge as the initial teachers, had not put their lecture notes on paper and there were no publications by Dr. Still or the American School of Osteopathy available. This frustration prompted Dr. Tasker to write his own book on osteopathic principles and practices, published in 1901. For years, it remained an essential text for the osteopathic profession. Dr. Dain L. Tasker, in his “Principles of Osteopathy,” has given us much that is of value to every student. His recognition of the importance of the cell, the nature of the different kinds of tissues, etc., and the unmistakable scientific basis upon which he rests his conclusions are worthy of special commendation. The work also discusses the subject of examination of the different regions of the body and the treatment of abnormalities. In both 1901 and 1907 he was elected president of the Osteopathic Association of the State of California. During 1910, the same year the Flexnor report, Dr. Tasker became the only D.O. to be president of the composite state licensing board.