Readers will know Bob Ross (1942-1995) as the gentle, afro'd painter of happy trees on PBS. And while the Florida-born artist is reviled or ignored by the elite art world and scholarly art educators, he continues to be embraced around the globe as a healer and painter, even decades after his death. In Happy Clouds, Happy Trees, the authors thoughtfully explore how the Bob Ross phenomenon grew into a juggernaut.

Although his sincerity in embracing democracy, gift economies, conservation, and self-help may have left him previously denigrated as a subject of rigorous scholarship,...