Grave of blues great Memphis Minnie

Memphis Minnie (real name: Lizzie Douglas) was one of the most prominent blues musicians during the 1920s to the 50s. She recorded over 200 songs, and did the original version of Led Zeppelin's "When the Levee Breaks." Most of her hit recordings were with her second husband, Kansas Joe McCoy. She died in 1973 after several years of health problems. A tombstone was erected several years after passing, as it was bought by Bonnie Raitt - one that was inspired by Memphis Minnie.
The Mississippi Blues Trail placed a marker not far from her grave outside Walls, Mississippi. There, I read her interesting story.