None.
﹖ unknown (unknown ≥ 1931)
﹖ unknown (unknown ≥ 1931)
﹖ unknown (unknown ≥ 1931)
﹖ unknown (unknown ≥ 1931)
This facility received its first walruses in 1931; two images dated to this year both show a group of four calves.
The Zoo last housed the species in 1935.