As stated elsewhere, I've started a careful proofreading against a good printed edition. This version has "A Study in Scarlet" proofread, with literally dozens of errors corrected. Some are significant (spelling mistakes); most are errors in punctuation or capitalization - questions without question marks, missing or suplus hyphens, etc. Uploaded v4.
Currently proofreading The Poison Belt, by Sir Arthur Conan Doyle.