Musick, W. L. (1897). The universal dictation course of Graham phonography: Made up of business letters from twenty-six different businesses, together with legal papers, depositions, and testimony from civil and criminal cases. Universal Text Book Co..

Musick, William Leslie. The Universal Dictation Course of Graham Phonography: Made Up of Business Letters from Twenty-six Different Businesses, Together with Legal Papers, Depositions, and Testimony from Civil and Criminal Cases. Chicago, Ill.: Universal Text Book Co., 1897.

Musick, William Leslie. The Universal Dictation Course of Graham Phonography: Made Up of Business Letters from Twenty-six Different Businesses, Together with Legal Papers, Depositions, and Testimony from Civil and Criminal Cases. Universal Text Book Co., 1897.