- Appleton, D. Appletons' Annual Cyclopaedia and Register of Important Events. D. Appleton & Company. 1902.
- Alumni Register. Alumni Register. General Alumni Society University of Pennsylvania. 1900.
Channing in 1861 moved to Providence, and associated himself with Prof. Graham Bell and Dr. E. W. Blake in the work of making a telephone which would be commercially practicable.