Thank you Campbell for a delightful experience in the wacky world of Oz. I have made the corrections in 19, 20, 21 and 22 and uploaded them. I reduced the volume in each of them but even is they are still a bit loud that is OK; I will adjust all of 'em in the validation process.
Good note about the PD status of this. It is fine to record anything at any time, just not to post it or put it into our catalog before it is PD, which it is now.
LibriVox has to be very careful and I agree completely.
On the other hand, most people are not aware that they can record their favorite book and put it into the Internet Archive on their own even if it was published yesterday. LibriVox is not involved at all and they are free to do as they wish. I have things in IA just because I wanted to do them but they weren't appropriate for LV. Of course few people see them but that is not the point.