Mail order brochure crossword clue

A classic!

The crossword clue "Mail order brochure" is likely to be a 4-letter answer. Here are a few possibilities:

• CATA (as in a catalog)
• FLYE (as in a flyer)
• PROS (as in a prospectus)
• SALE (as in a sales brochure)

If none of these fit, please provide more letters or context from the crossword puzzle, and I'll do my best to help you out!