| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Strange footprints on the land: Vikings in America | 978-0-06-022772-2 (0-06-022772-9) | 1980 |
| Strange Footprints on the Land: Vikings in America | 978-0-06-022773-9 (0-06-022773-7) | 1980 |
C.F. · C Frick · C.H. · C. H. Irwin · Constance H. · H. I.