I got here the long way around.
I received a
collection of "mystery classics" (movies) on DVD for Christmas. The first one my family watched was "Bulldog Drummond's Revenge". We got a kick out of it--if you like 1930's B-movies, you might like it too.
Anyway, I saw in the movie's credits that it was based on the books by H. C. McNeale. I thought to myself "those books are probably in the public domain." And sure enough, I found this collection that HarryT uploaded. I'm reading the first one in the collection now ("Bulldog Drummond"), and as usual, the book is much better than the movie!
So, thanks, HarryT, for uploading this collection.