1850                Rooms at the house formerly occupied by Alvah Hathaway, Barre, Massachusetts.

George R. Warren was recorded in one advertisement that appeared on August 23, 1850 in the  Barre Gazette (Barre, Massachusetts).  Miniatures.  The subscriber has taken Rooms at the house formerly occupied by Alvah Hathaway for the purpose of taking Daguerreotype Miniatures, and will be happy to wait on all who may favor him with their patronage, on Friday and Saturday of each week.  Hoping that the merits of his miniatures and his own exertions to please will be sufficient encouragement for those wishing Miniatures to give him a trial.  Geo. R. Warren.  Barre, Aug. 2, 1850.

George R. Warren does not appeared in other photographic directories.