None.
♂ Wally (transfer 1884-Oct-12)
This facility was the predecessor of the Central Park Zoo. It began housing sea lions in one of its fish ponds in 1884; this is where the walrus was housed during his brief hours-long stay at the menagerie.
1884-Oct-13. New-York Tribune. A WALRUS IN CENTRAL PARK. Retrieved from newspapers.com.
2017-Jun-27. Sarah Evans. The Three Sisters Ponds. Retrieved from Baltimore Heritage [archive]