I have posted one story by Mark Twain in IMP format. I need someone to proof it and confirm that it works on the 1150; I don't have one.
https://www.mobileread.com/forums/showthread.php?t=14075
I have 12 other twain titles ready to be converted. I await some response that indicates there is interest in having these ebooks for the 1150. Otherwise I will not bother.