Studies in psychical research
Studies in Psychical Research is an 1897 New York study by Frank Podmore, a British writer on spiritualism and parapsychology, written for readers interested in investigating paranormal claims. Its pictures are hand-drawn line diagrams of zigzags, cross-hatched grids, concentric circles and ovals, and simple crosses, arranged as numbered plates; a designer might take from them the look of naive, schematic sketches made as records of observed patterns.
