Nathaniel B. Shurtleff.
From Dr. Walter Channing.
Boston, December 17, 1855.
Mr. Thomas Lewis.
Dear Sir: I have examined your Improved Syringe, and find it will perfectly answer the purpose for which it is designed, either for self or family use.
Walter Channing, M. D.
From Henry G. Clark, M. D., Surgeon at the Massachusetts General Hospital, and City Physician of Boston.
Boston, December 11, 1855.
Mr. Thomas Lewis.