- Digital Commonwealth
- Boston Public Library
Title and date from item, from additional material accompanying item, or from information provided by the Boston Public Library. Handwritten note on item verso: Tunnel rock. Estate of Jon Conness, from Mattapan district, 1906. Given by Mr. Henry Moulton.
- Rights status not evaluated. This work is licensed for use under a Creative Commons Attribution Non-Commercial No Derivatives License (CC BY-NC-ND).