If I remember correctly, I've got all of those stories in either the Juvenilia or the Colaborations books.
Check them out if you haven't yet read them.
Thanks for the complement on my collection.
I'm currently going through a re-write of them to try and correct some of the formatting and apply corrections that Jelby found. This is taking quite some time as have been very busy with work but hope to get them out soon.
In the mean time, I hope you and everyone else enjoy my books, I plan on getting a few more out soon. Looking at a few 19th century fantasy writers to do.