This bell stands near the Dobbs Ferry High School. The lettering on it indicates that it relates to the Dobbs Ferry Union Free School District (the name seems to have changed since then); a date (1918); and what seems to be a list of the members (trustees?) of the Board of Education.
Taken with a Fuji X-E3 and Fuji XC 16-50mm f3.5-5.6 OSS II