The history of the EServer.
The EServer got its start in 1990, when a group of graduate students set up their office computer in "trailer H" on the Carnegie Mellon University network to permit them to collaborate with one another. In 1991, with the addition of more disk space, we made the computer into a network server designed to provide public access to literary research, criticism, novels, and writings from various humanities disciplines.
We needed a name: "the Server" sounded too generic. The most frequent users (all 12 of us!) decided on "English Server", since our users were all in CMU's English Department.
Today we keep the capital "s" of EServer just to remind us of that it's a bit of a contraction, and to confuse word processors that try to help writers with their spelling.