A collection of books, compiled by Rex, by people who spent a year doing something and then wrote a book about it. Topics include competitive eating, not shopping, and reading the OED.

The 300 page book All Known Metal Bands is a simple listing of every heavy metal band name that exists or has ever existed, in every genre, that I could find, in what turned out to be a year and a half of research. Where a name was used by more than one band, the name is listed once for each band. The pages are black, the type is silver, and it will make you want to do naughty things. Of the 51,000 bands listed, the most commonly used name is Legion. There are 24 bands named Legion. There are 20 bands named Genocide, and 20 called Requiem. There are 2 called Cryptic Stench, but there is only one Black Darkness.

Edge-notched cards were invented in 1896. These are index cards with holes on their edges, which can be selectively slotted to indicate traits or categories, or in our language today, to act as a field. Before the advent of computers were one of the few ways you could sort large databases for more than one term at once.