Tabletop Library: https://tabletoplibrary.com/?affiliates=18
In addition, OSR cool-guy Gabor Lux (aka Melan) has written a very nice review of my Osric module Secrets of the Wyrwoode.
You can read it here:http://beyondfomalhaut.blogspot.it/2017/03/review-secrets-of-wyrwoode.html
Secrets of the Wyrwoode is available in pdf at DTRPG, Tabletoplibrary and Lulu.
Lulu also carries the saddle-stitched POD version.