That’s nice. It’s definitely the same melody. I’m wondering if Woody Guthrie wrote it or if he himself borrowed an older folk melody.
I read that Comrade Woody wrote “This Land Is Your Land” to be an atheist/Communist alternative to “God Bless America”—and perhaps the new national anthem for a Soviet America. So he wrote the lyrics and then stole the melody from “The Fire Song” (”When the World’s on Fire”) the Christian hymn attributed to blues singer Blind Willie Davis and shared by Ding-Dong-Daddy in post #176.
Commies always steal.