Miller, W. S., & Ash, J. W. (1892). Farm line and borough atlas of Delaware Co., Penna.: Compiled from Dr. Ash's map of actual surveys, and official records, private plans & actual surveys. Philadelphia: E.W. Smith.

Miller, William S., and Joshua W. Ash. Farm Line and Borough Atlas of Delaware Co., Penna.: Compiled From Dr. Ash's Map of Actual Surveys, and Official Records, Private Plans & Actual Surveys. Philadelphia: E.W. Smith, 1892.

Miller, William S., and Joshua W. Ash. Farm Line and Borough Atlas of Delaware Co., Penna.: Compiled From Dr. Ash's Map of Actual Surveys, and Official Records, Private Plans & Actual Surveys. Philadelphia: E.W. Smith, 1892.