The Silliman Memorial lectures series has been published by Yale University since 1901. The lectures were established by the university on the foundation of a bequest of $80,000, left in 1883 by Augustus Ely Silliman, in memory of his mother, Mrs. Hepsa Ely Silliman. Hepsa Ely was the daughter of the Reverend David Ely, a member of the Yale College Class of 1769. She was married to Gold Selleck Silliman, brother of Professor Benjamin Silliman and a 1796 graduate of Yale College. She was the mother of two sons, August Ely Silliman and Benjamin Douglas Silliman. Benjamin graduated from Yale College in 1824.