There actually was a real Steve Brodie who claimed that he jumped off the Brooklyn Bridge in 1886 and survived. Even though the newspapers enthusiastically reported his story, there's no evidence that it actually happened. The fact that his name was used in this cartoon means that he is the only celebrity caricatured in a Merrie Melodies short who was already dead at the time.
While Lloyd Turner and Bill Scott are both credited for story, in actuality the short was written solely by Turner without any involvement from Scott, whose credit was a mistake on the part of title card artist Don Foster.
On the Zodiac wheel, Lobo the Wolf has replaced Leo the Lion.
The ERSTER BAY and GREENPERNT signs are digs at how many New Yorkers pronounced "Oyster Bay" and "Greenpoint."