The following texts are reprinted with permission, or are in the public domain.

"History of Delaware County, Pennsylvania", Henry Graham Ashmead, 1884

"Bethel Township, Delaware County, Pennsylvania Thru Three Centuries", George Walter Goodley, 1987

"The trackless train: Tracking Delco's role in the Underground Railroad", Loretta Rodgers, 2/27/1999, Delaware County Daily Times.

"When flying machines were all the rage", Robert F. O'Neill, 2/9/1992, The Philadelphia Inquirer

Passenger List of the Bark Wenham - 1850, submitted by Helen Imburgia

A Family History of Joseph and Jane Dalton from Cumberland County England to Upland Pennsylvania - A Biographical Narrative of a Dalton Lineage from 1805 to the Early 1900's. Compiled by Tina Marie Culbertson