Across
- 3. Stamp pricing and identifying book
- 5. Item used to enlarge viewing of a stamp
- 9. Back of the book tax stamp
- 10. Nickname for famous inverted airmail stamp
- 12. Stamps collected for their specific design
- 13. Stamp without perforations
- 16. Hunting stamps issued for waterfowl
- 17. A collectible envelope
- 18. Method of purchasing stamps
- 19. Postmaster known for national parks souvenir sheets
- 20. Stamp intended for travel by plane
- 21. Stamp bearing a cancellation
Down
- 1. The study of postage stamps
- 2. Device used to handle stamps carefully
- 4. First stamp issued
- 5. Unused stamp
- 6. stamp legitimately cancelled before being affixed to mail
- 7. Cancellation on a stamp
- 8. Item used to affix used stamps to page
- 11. Person appearing on first regular issue U.S. stamp
- 14. Housing for a stamp collection
- 15. President known for collecting stamps