Sorry. The link that didn't paste was

https://yiddishsong.wordpress.com/about/


Here's somebody else who knows about Ludwig Satz's recorded output:

http://faujsa.fau.edu/jsa/google_search_results.php?cx=011321447529569853440%3Aawrygaf6wly&cof=FORID%3A9&ie=UTF-8&q=Ludwig+Satz

but they simply digitize stuff, they don't document it themselves.