Related Clues:
- It covers rock, in a game
- Printer's purchase
- Loose-leaf filler
- Diploma material
- Communication medium
- Sheet for a quick message
- Cover (over)
- Correspondent's need
- With workers, the "P" in CEPU
- Writing material
- Rock beater
- Research project
- Treatise
- Where you may find the ends of 17-, 23-, 52- and 63-Across
- USA Today, for one