O'Brien, Doctor P. M.
Dr. P. M. O'Brien was in charge of the Port Townsend Marine Hospital in 1858, having previously managed a drug store on Water Street. O'Brien apparently sold out his interest in the hospital after some years to Dr. George V. Calhoun.
See James G. McCurdy, De Juan de Fuca's Strait: Pioneering Along the Northwestern Edge of the Continent (Portland: Metropolitan Press, 1937). BCDES 26.1.
Biographical information for this person is not yet complete.
Mentions of this person in the documents