Camp Trinity was an event held from June 28th through July 6th in the summer of 1890. Class of 1877 alumni and Trustee Board member Robert H. Coleman invited the whole college to attend an outing at Mount Gretna, Pennsylvania. The original intent was for Coleman to give the current Trinity baseball team a tour of Pennsylvania using his private railway car, but he decided to expand his vision and make it a social event for undergraduates and alumni's.

180 tents were set up on Lake Conewago in Pennsylvania, and 159 undergraduates and alumni attended. The tents each contained washstands and cots, and some were set up to function as post offices, barbershops, newsstands, and reading rooms. The main focus of the gathering was to watch the multiple baseball matches that had been organized; Coleman had brought the teams from Lafayette and University of Pennsylvania to compete as well. There was an array of other events that took place at Camp Trinity, including fireworks, live music, marches, and trips to estates of Colemans and Pennsylvania Steel Works.

More recently, the term has been used to describe the college as a whole and peoples time on campus. For example, alumni will reflect back on their 4 years and the time they spent at “Camp Trinity”.

Trinity College Bulletin, July 1952, pp. 11.

The History of Trinity College (1967) by Glenn Weaver, pp. 213.

The Trinity Reporter, Winter 2005, pp. 101.