Big Book of Riddles by R.J. Sphinx Edit
The Big Book of Riddles is a small compendium of riddles, seemingly a 100 page hardbound book from the 70s, 10 point font, nothing unusual except the number of entries. The Author, R.J. Sphinx, made sure to include every riddle he knew, which happens to be every one that has ever existed, from the first riddle to the last, every riddle ever told, in any style or language, in any time and place, and riddles which don't exist yet. Now given that the book has only 100 pages this must be impossible, yet the pages contain all these riddles. Each riddle has the notation "answers on page 101", but of all pages, 101 does not exist.
Use this as equipment for solving enigmas, even if they do not provide an answer the riddles can help complete an incomplete riddle, provide insight into the writer, and origin of the riddle.