Stillé, C. J. 1., & Hamlen, B. L. (1839). The social spirit.: A valedictory oration, pronounced at the departure of the senior class from the Society of Brothers in Unity, Yale College, June 28, 1839. New Haven:: Printed by B.L. Hamlen..

Stillé, Charles J. 1819-1899., and Benjamin L. Hamlen. The Social Spirit.: A Valedictory Oration, Pronounced At the Departure of the Senior Class From the Society of Brothers in Unity, Yale College, June 28, 1839. New Haven:: Printed by B.L. Hamlen., 1839.

Stillé, Charles J. 1819-1899., and Benjamin L. Hamlen. The Social Spirit.: A Valedictory Oration, Pronounced At the Departure of the Senior Class From the Society of Brothers in Unity, Yale College, June 28, 1839. New Haven:: Printed by B.L. Hamlen., 1839.