Captain Elam Lynds (1784–1855) was a prison warden and was known for his carceral innovations, such as producing goods for sale outside of prisons for profit, instituting absolute silence among prisoners at all times, and solitary confinement of prisoners at night, and for his cruelty as a warden. He helped create the Auburn system, which consisted of congregate labor during the day and isolation at night, starting in 1821 and was Warden of Sing Sing from 1825 to 1830.