There's a picture of the cover at the link. Well worth a look. And the story's by Gil Brewer!
The Geek Curmudgeon :: Holy Gasbags!: " Among ape collectors, Gil Brewer's 'Gorilla of the Gasbags' is a Holy Grail of sorts. The legendary cover of the June 1929 Zeppelin Stories tantalizes with a gorilla and a man fighting from the ladder beneath a flying dirigible! I've longed to read the story, but not only have I never actually seen one, I know of no one who has read the story.
Shockingly, a copy of the much sought after pulp recently sold on ebay for the astronomical sum of $3,183.33! Oh, to find one at a garage sale someday!"