I love coming upon a new sign commemorating the East Village's interesting history. I had never heard of Otto Mauer or his Magical Bazaar, at 2nd St & the Bowery (just a couple of blocks from me). According to the text, he made and sold magic and juggling apparatus, performed and taught magic here. Houdini worked across the street at the Globe Dime Museum and may have learned the back palm card trick from Mauer.