Richard Toronto has written the definitive work on the artwork of Richard Shaver, in two volumes, with over 300 illustrations. I wrote the introduction for the second volume, linking Shaver’s preoccupation with stones and pareidolia to the long tradition of scrying and lithomancy. It’s from Shavertron Press, and you can find it on Amazon. Here’s Toronto’s description:

In 1960, science fiction writer Richard Sharpe Shaver discovered “rock books” on his Wisconsin farm. He concluded they were not just rocks, but intelligently designed documents, the recorded history of an ancient, pre-deluge civilization. For 15 years he decoded the rock book texts and images he found embedded in stone, and soon began painting and photographing what he found. It was an alien world that few other than Shaver could see. Shaver also wrote essays to complement his paintings. He wrote of the people and customs of Earth’s pre-history—the half human, half fish Mermen and women—documenting their daily lives in intimate detail. He left behind a body of work that has languished in obscurity for decades. Richard Toronto has gathered together the largest collection of Shaver’s art ever to see print. Presented in two volumes, with more than 300 illustrations, Rokfogo: The Mysterious Pre-Deluge Art of Richard S. Shaver presents the paintings, photographs, and essays that made up Richard Shaver’s ante-diluvian cosmology. Now considered an Outsider artist, Shaver was a pulp fiction writer during Amazing Stories’ golden era. Shunned by mainstream science fiction fans for his radical ideas, Shaver died in obscurity in 1975, leaving behind his legacy of the “sensual art of the ancients.”