The following article was found in the Dec. 14, 1916, Lowell Tribune on
page10, column 4:
Dr. J.A. Dinwiddie went to Dayton, Ohio, last Wednesday, where he gave a
lecture before the Ohio State Dental Society, and on Thursday he
lectured before the Indiana Dental College at Indianapolis. The doctor
has gained an enviable reputation as a lecturer and has frequent calls
that he has to turn down on account of his business here.