Nature Study Guild Publishers · Snapshot Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Early Indigo | 978-1-903543-01-6 (1-903543-01-0) | 2000 |
| Life on Intertidal Rocks: A Guide to the Marine Life of the Rocky North Atlantic Coast | 978-0-912550-15-2 (0-912550-15-5) | 1987 |
C.D. · C.H. · C. Hunter · H.D. · H. Day