This is the album you're referring to: https://music.apple.com/nz/album/childrens-songs-and-stories/278758085
As far as I know, this is still copyrighted material. My brother, sister, and I still receive royalties for his work. His publisher was (and still is) TRO, in NYC. I'd forgotten how wonderful these stories were - they were old favorites, and bring back beautiful memories.