As part of the “A Vanished Port” series, Richard Grossman, professor of economics, presented a lecture titled, “How Rich Was Rich,” at the Russell Library in Middletown, Conn. on Nov. 9. The lecture came as part of a newly opened exhibit at the Middlesex County Historical Society. “A Vanished Port: Middletown and the Caribbean, 1750-1824,” takes objects and documents from the time period to illustrate the “culture of prosperity that grew from Middletown’s trade relationships with the slave-worked sugar plantations of the English Caribbean.” Using Middletown merchant, Richard Alsop, who died in 1776 with a huge estate that included property, possessions,…