The Village Board will observe the milestone when it meets May 8, the day a public vote in 1875 approved the formation of a system of governance for what had been an unincorporated hamlet. An illustrated program, to be held Sunday, July 13 at 2 p.m. at the Middletown History Center

The celebration will begin with a 2 p.m. ribbon cutting on the doorstep of the expanded facility which includes an archives and reading room named for HSM benefactor Nicholas J. Juried.