Lewis, E. O. (1929). The re-discovery of the American background: An address before the annual meeting of the Society of colonial wars in the commonwealth of Pennsylvania, March 14, 1929, at the Penn athletic club, Philadelphia. [Philadelpnia?]: Printed by order of the Society.

Lewis, Edwin O. The Re-discovery of the American Background: An Address Before the Annual Meeting of the Society of Colonial Wars in the Commonwealth of Pennsylvania, March 14, 1929, At the Penn Athletic Club, Philadelphia. [Philadelpnia?]: Printed by order of the Society, 1929.

Lewis, Edwin O. The Re-discovery of the American Background: An Address Before the Annual Meeting of the Society of Colonial Wars in the Commonwealth of Pennsylvania, March 14, 1929, At the Penn Athletic Club, Philadelphia. [Philadelpnia?]: Printed by order of the Society, 1929.