New era card trick
A conjuring manual by August Roterberg, published in London by W. & F. Hamley in 1897, explaining sleights and gimmicked-card methods for stage and parlour performers. Line engravings show playing cards in plan view — solid black pip suits, a line-drawn King of Spades court figure, arrows marking hidden cuts — usable as clean card motifs, suit symbols and diagrammatic overlays.
