Delta Kappa Epsilon

Delta Kappa Epsilon (ΔΚΕ), commonly known as DKE or Deke, is one of the oldest North American fraternities, with 56 active chapters across America and Canada. The fraternity was founded at Yale College in 1844 by 15 sophomores who were disaffected by the existing houses on campus. They established a fellowship "where the candidate most favored was he who combined in the most equal proportions the gentleman, the scholar, and the jolly good fellow."

The private gentleman's club the DKE Club of New York was founded in 1885 and is currently in residence at the Yale Club of New York City.

https://en.wikipedia.org/wiki/Delta_Kappa_Epsilon