hm, well my list would be long, if i could remember from the top of my head where i got all the free books from (mainly here and feedbooks, but also some other sources like ebooks libres et gratuits...) but let's see :
Topper - Thorne Smith by BenG (planning to read "Night life of the gods" too !)
tons of detective stories by Patricia, including books by
Dorothy L. Sayers
Anna Katherine Greene
some very interesting books about language by madam broshkina (and some others by madam broshkina too) notably "less than words can say" by Richard Mitchell. i highly recommend it. there are three by him available here (thanks madam b !) and the other two are on my list.
quite a lot of sagas and original fiction...
...and, well, tons more, but i have a terrible memory.
i'm sure i'll think of more soon.