Grossman created Phantasmaphile, a visual and informational meal of art eerie and wonderful. Perhaps the site "specializes in art and culture with an esoteric or fantastical bent," but I like focusing on the eerie stuff.
Here's a teaser from the exhibit website:
. . . artists who, quite literally, created spells via drawings on the floor, scrawls in books, lines cut into wood or stone. Though the featured players of this story are often English magicians from John Dee to Austin Osman Spare to Alan Moore, symbol-based magic can be traced back through the ages and across cultures. Germanic runes were carved. . .
Fascinated? Me too. The exhibit runs through June 17th.