K.k. · Katherine Kreuter · Kathryn Kreider
Schiffer Pub Ltd · Schiffer Publishing, Ltd
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| One Hundred Years of Valentines | 978-0-7643-0707-2 (0-7643-0707-X) | 1999 |
| Valentines for the Eclectic Collector | 978-0-7643-0917-5 (0-7643-0917-X) | 1999 |
| Valentines: With Values | 978-0-88740-932-5 (0-88740-932-6) | 1997 |