| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Pittsburgh, Pennsylvania, laminated Flipmap: Including cemeteries, Etna, The Golden Triangle, Green Tree ... shopping centers | 978-0-7625-0544-9 (0-7625-0544-3) | 1997 |
| World atlas reference edition | 978-0-7625-0620-0 (0-7625-0620-2) | 1997 |