As is the case with the other Superman cartoons from the Fleischer Brothers, this cartoon can often be found in multi-cartoon packs for little money. However, you can also download them for free at archive.org--legally, since they are in the public domain.
The short begins with Lois and Clark at the circus. Lois is doing a story and taking photos and Clark decides to head back to work. However, just as he's about to enter the Daily Planet Building, he sees a commotion and rushes back to the circus. An enormous ape (Kong-sized) escaped and in the process freed a lot of other dangerous animals. So, it's up to Superman to round up the beasts and save Lois.
As usual, Superman saves Lois--though at least here she isn't being stupid but ends up in harm's way because she's trying to save a child. The plot is interesting and a bit atypical for the series. Worth a look.