Martin Frost purposely makes art most people won’t see. That’s not because it’s all hanging in some obscure museum or small gallery; it’s because he’s a vanishing fore-edge painter. The art form, which dates back to the 1600s, involves painting pictures on the edges of books that remain hidden unless the pages are pulled in a specific way. Frost is the last working fore-edge painter in the world, so he’s all that stands between the style meeting its demise. Great Big Story did a fantastic video about his process and the style itself.