Most of us know Lewis Carroll as an author, but he didn't just write books. He also wrote letters. He wrote a lot of letters. He also wrote about writing letters. As an avid letter writer, he often found himself in need of stamps. Faena Aleph did a great write up on the case he invented to solve his stamp sorting problem. The Wonderland Postage Stamp Case was printed in 1889. It had twelve denominated pockets and was presented with this explanation:
This case is not intended to carry about in your pocket. [… ] No, this is meant to haunt your envelope-case, or wherever you keep your writing-materials. What made me invent it was the constantly wanting Stamps of other values, for foreign Letters, Parcel Post, &c., and finding it very bothersome to get at the kind I wanted in a hurry. Since I have possessed a “Wonderland Stamp Case”, Life has been bright and peaceful, and I have used no other. I believe the Queen’s laundress uses no other.