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In page Sing Sing:

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In total, 614 men and women—including four inmates under federal death sentences—were executed by electric chair in the death row house at Sing Sing with "Old Sparky", until the abolition of the death penalty in 1972. High-profile executions include Julius and Ethel Rosenberg on June 19, 1953, for espionage for the Soviet Union on nuclear weapon research; and Gerhard Puff on August 12, 1954, for the murder of an Federal Bureau of Investigation (FBI) agent.[1] The last person executed in New York state was Eddie Lee Mays, for murder, on August 15, 1963.