My dad's recording of Song of My Hands is in the collection Songs for Political Action. My family will be making a collection of his songs to share sometime in the near future. People on this list may be interested to read this short version of my dad's life:
https://www.legacy.com/us/obituaries/mercurynews/name/ernest-lieberman-obituary?id=53081258

Here are a couple of his songs, one with the Gateway Singers and one with the Limeliters:
https://www.youtube.com/watch?v=2fr7KIfKf94
https://www.youtube.com/watch?v=fZ1KtGOhZXE

Feel free to contact me at roblieb13@gmail.com for more...