Eli Goldberg's Prometheus Music is offering a PDF of Leslie Fish's personal filk book as a fundraiser for preservation of Leslie's songs.

Please read the description carefully before paying. This isn't a curated, edited, and typeset book, but a huge collection of scans of Leslie's personal song pages, and perhaps even more interesting for this.

https://www.prometheus-music.com/product/leslie-fishs-filkbook/