Dearborn Heights was incorporated from the two discontinuous sections of Dearborn Township and a quarter-mile connecting strip of land from the village of Inkster. Incorporation petitions were filed on Friday, March 4, 1960, while Inkster officials delivered their petitions for incorporation on Monday, March 7, 1960. The residents approved Dearborn Heights incorporation on an election held June 20, 1960, which is the official date of incorporation. Inkster filed a lawsuit that was not finally resolved until the Michigan Supreme Court handed down a decision favorable to Dearborn Heights on April 8, 1963.

SOURCE:  Wikipedia