Named for diplomat and U.S. Senator John Slidell of Louisiana by son-in-law Baron Frederic Erlanger, one of the financiers of New Orleans and Northeastern Railroad. Incorporated Nov. 13, 1888.
Built in 1907, this building replaced the original wooden Jail and Mayor's Office. It was Town Hall until 1954 and the Jail until 1963. The town's fire engine was located in the addition from 1928 until 1954.