- Baltimore (Md.), Topographical Survey Commission
- Digital Commonwealth
- Boston Public Library
- R.L. Polk & Co
Prepared for R.L. Polk & Co.'s vest pocket city directory and car line guide of Baltimore. Used through the courtesy of the City of Baltimore Topographical Survey Commission. Copyright, 1914, by Topographical Survey Commission.
- Baltimore (Md.)--Maps
- No known copyright restrictions. This work is licensed for use under a Creative Commons Attribution Non-Commercial Share Alike License (CC BY-NC-SA).