Middletown Campus of Miami University or Miami University Middletown. In the 1960s, Miami established new campuses in Middletown and Hamilton. On a tract provided by the Armco Steel Corp., ground was broken Jan. 28, 1965, for the Middletown Campus. Funding included a million dollars each from state and federal government, plus $1.59 million raised within the community. The institution was dedicated Sept. 5, 1966. Additional facilities have been built since the opening of the campus. (see separate entries for Miami University and the Hamilton Campus of Miami University.)