This April 20, 1944, Lowell Tribune article was found on page 3, column 2:
In a recent letter to his parents, the Dr. J.A. Dinwiddies, Capt. G.A. Dinwiddie writes that he has been put in charge of the prosthetic department of a base hospital in Hawaii, where he [is] stationed. Also connected with the same hospital is Dr. Ogden Pinkerton, son of Mrs. C.D. Pinkerton of Lowell. Dr. Pinkerton, who has been practicing in Hawaii for several years, joined the army medical corps some time ago.