THE MAMAS AND THE PAPAS. Clipped signature by Cass Elliot (b. 1941-1974) and Michelle Phillips (b. 1944). [N.p., n.d., ca. 1970s]. Small note inscribed by Cass Elliot and additionally signed by Michelle Phillips: “To Sue – Love, Mama Cass Mama Michelle”. Cass Elliot signed in blue; Michelle Phillips signed in black. On a slip of white paper, with “Efficiency and Service” printed in red at the bottom. Approximately 3 ¼ x 4”. Upper margin trimmed a bit unevenly, some toning, rubbing, creasing, one vertical crease near the right margin. Very good. With a COA from The Written Word. The Mamas and the Papas were an important band in the 1960s counterculture movement, with their song, “California Dreamin’” being one of the most famous songs of the era. Provenance: The Bo Overlock Collection.