There's a third #skypirate film in this proto- #steampunk trilogy called The Arial Anarchists, but it has been lost for around 100 years.
It's based on a book, though. The book is called Hartmann, the Anarchist; Or, The Doom of the Great City by E. Douglas Fawcett
That's on PG and Librevox. I haven't read it. I might not ever read it. Who knows?
But if you wanted to watch a 115 year old science fiction film about sky pirates... well, go watch The Pirates of 1920, it's a much better movie than The Airship Destroyer.
But if you wanted to watch a Second 115 year old film about #skypirates... Go watch The Aerial Submarine, it's a much better film than The Airship Destroyer.
But if you wanted to watch a THIRD 115 year old film about #airship pirates... well, The Airship Destroyer is now available.