I have a cassette with this song on it. It's entitled just "Rosebud," which is evidently both the name of the group and of the album. I don't have the cassette cover, so that's all I know. I think that the group consisted of one of the better-known female folksingers of the sixties boom, with a couple of dudes added for backup. Judy Henske comes to mind, but I have no idea if that's right.The cassette is like 30 years old. I don't know if the tape would break right away if I tried to play it or what.
I think I did buy it originally because I liked that same song, which is why I remembered I had it.