Abercrombie, J. (1810). A charge containing hortatory observations on the value of time,: Delivered at a publick commencement, July 26, 1810, to the senior class of the Philadelphia Academy, upon their having completed the course of study prescribed by that institution. Philadelphia:: Printed for the author by Fry and Kammerer..

Abercrombie, James. A Charge Containing Hortatory Observations On the Value of Time,: Delivered At a Publick Commencement, July 26, 1810, to the Senior Class of the Philadelphia Academy, Upon Their Having Completed the Course of Study Prescribed By That Institution. Philadelphia:: Printed for the author by Fry and Kammerer., 1810.

Abercrombie, James. A Charge Containing Hortatory Observations On the Value of Time,: Delivered At a Publick Commencement, July 26, 1810, to the Senior Class of the Philadelphia Academy, Upon Their Having Completed the Course of Study Prescribed By That Institution. Philadelphia:: Printed for the author by Fry and Kammerer., 1810.