In addition to publishing a book-sized collection of failed angle trisections, Underwood Dudley is also the author of "Mathematical Cranks" (978-0883855072), wh

In addition to publishing a book-sized collection of failed angle trisections, Underwood Dudley is also the author of "Mathematical Cranks" (978-0883855072), which gives a broad and fascinating descriptions of all sorts of examples of the species. It remains one of my favorite books for the wide range of examples and a few insights into how crankery develops in otherwise sensible people.