| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Norse Discovery of America | 978-0-914032-02-1 (0-914032-02-X) | 1981 |
| The man who led Columbus to America, | 978-0-914032-01-4 (0-914032-01-1) | 1973 |
H. C. · H Chapman · P. C. · P. Chapman · P. H. · Paul C. · Paul Chapman