NY Times Crosword
Patrick Merrell

The answers to the clues below will have something in common:

1. "Wish you were here" may be written on it
2. Person of letters
3. Uppers - informally
4. Petty criminal
5. You may not be invited
6. Expensive - informally
7. Paper shuffler
8. Often maligned picture
9. Miser
10. The sound of little feet
11. New Dad
12. Potato, meat, and sauce dish
13. Mailing option
14. Like city parks
15. Rat whisperer

Answers:

1. Picture postcard
2. Pen pal
3. Pep pills
4. Pickpocket
5. Private party
6. Pretty penny
7. Pencil pusher
8. Passport photo
9. Penny pincher
10. Pitter-patter
11. Proud papa
12. Pot pie
13. Parcel post
14. Public places
15. Pied Piper