Yes, it's a marvelous gift! From Mr., of course!
I had the great pleasure to briefly meet Bill Marx, Harpo's son, when he played in my home town. He had teamed up with a harpist; he played piano, she played harp, and Bill reminisced about the Marx family. Afterward, I stood in line to buy an LP. I took along my copy of "Harpo Speaks!" and when he spotted it, he said, "I know what that is!" He wanted me to stay around and chat, but a neighbor lady had brought me and she had to leave, so I couldn't stay to chat ... darnit!
Our favorite Marx Bros. documentary is "The Marx Brothers in a Nutshell," produced in the 1970s. Plenty of interviews and plenty of clips!