 The Edward F. Dunne Crib was built in 1909.Named after Chicago Mayor Edward Fitzsimmons Dunne, who was in office at the time crib plans were approved, the diameter circular crib stands in of water and houses a diameter interior well connected to two new tunnels.The Dunne Crib is situated from the 68th Street Crib and accessible by a steel footbridge, allowing one set of keepers to service both cribs.