You can now hear some of Pepi Litman’s recordings on the Internet Archive!
There’s also a Wikipedia article about her.
And I hear that my Yiddisher teater comrade Miryem-Khaye Segel is writing a scholarly article about the Broderzinger movement that inspired Pepi Litman, & many others, to crisscross Eastern Europe in the nineteenth century, trying to educate & uplift the masses through Yiddish song & comedy. They were like the earliest Yiddish sketch comedians!
Here’s an article about Pepi in the Times of Israel; scroll down to see our interpretation of her song “Hot a yid a vaybele!”