On the Early Gravestone Carvers:

Luti, Vincent F. Mallet & Chisel: Gravestone Carvers of Newport, Rhode Island, in the 18th Century. Boston: New England Historic Genealogical Society, 2002.

The Farber Gravestone Collection, American Antiquarian Society:http://www.davidrumsey.com/farber/view.html
[An on-line collection of over 13,500 images documenting more than 9,000 gravestones, most of them made prior to 1800. It includes 244 images of stones in the early burying grounds of Newport, R.I. To find these enter the search term "Newport."]

On the Benson Family and the History of the John Stevens Shop:

Garman, James C. The Stone Carvers Business: Three Centuries of the Craft Tradition at the John Stevens Shop: http://www.salve.edu/departments/art/gallery/pastexhibits/2006fall/StoneCarvers.pdf
[A 26-page, illustrated 2006 exhibition catalogue.]

Hall, Elton W. "The John Stevens Shop: Three Hundred Years of Stonecutting in Newport," The Chronicle of the Early American Industries Association, 58 (No. 4, Dec. 2005), 141-153.
[Well illustrated overview.]

John Stevens Shop official website: http://www.johnstevensshop.com/index.php
[Full and informative on the history, personnel, activities, and achievements of the John Stevens Shop, with photographs and essays.]

On John Howard Benson, carver, calligrapher, and author, first of the Benson line of carvers: http://www.redwoodlibrary.org/rwnl/benson.htm
[An illustrated catalogue of an exhibition at the Redwood Library and Athenaeum in Newport, R. I.]

Newspaper article on the John Stevens Shop: http://www.eastbayri.com/print/334625261006025.php
[Marilyn Bellemore, "This Newport Business is 'Rock' Solid, After 300 Years," East Bay (R.I.) Newspapers, Dec. 15, 2005, based on an interview with Nick Benson, son of John "Fud" Benson and current owner of the John Stevens Shop.]

Photo essay on the contemporary John Stevens Shop: http://www.nesbittphoto.com/htm/johnstev.htm
[Ten striking photographs.]