Information about Malvina Reynolds and her music is available on her daughter Nancy Schimmel's website, www.sisterschoice.com (which is run by Nancy Schimmel's daughter, Nancy Ibsen). There are some song lyrics there, but I'm not sure if God Bless the Grass is included. I think the lyrics are in Rise Up Singing, though. And you can email Nancy Ibsen from the site to ask for them. Good luck!

Turtle