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Watts Library Books in Order

Watts Library is a 9-book series by Anthony D. Fredericks for ages 9–12, at a grades 6–7 reading level, with gentle to moderate content (HootRated intensity 1–3 out of 5).

Books
9
By publication date
Reading level
Grades 6–7
Average grade level 7
Recommended ages
Ages 9–12
From HootRated age ratings
Content intensity
Gentle to moderate
HootRated 1–3 out of 5 · avg 1.3

Watts Library Reading Order

Series numbers aren't available for most Watts Library books, so they're listed by publication date (oldest first).

# Title Reading Level Ages Content
1 Animal sharpshooters
1999
Level 6-7 9-12 Gentle
2 Birds of prey
A Look at Daytime Raptors
1999 · Sneed B. Collard
Level 7-8 9-12 Moderate
3 Cannibal animals
Animals that Eat Their Own Kind
1999
Level 6-7 9-12 Mild
4 The Colorado River
1999 · Carol Rawlins
Level 7-8 9-12 Gentle
5 The Orinoco River (Watts Library)
1999 · Carol Rawlins
Level 7 9-12 Gentle
6 The Seine River
2001 · Carol Rawlins
Level 6-7 9-12 Gentle
7 Fearsome Fangs
2002
Level 7-8 9-12 Gentle
8 Pythons and Boas
2002 · Gloria G. Schlaepfer
Level 6-7 9-12 Gentle
9 Rain, Hail, and Snow (Watts Library)
2002 · Trudi Strain Trueit
Level 7-8 9-12 Gentle

Content Intensity Across the Series

Varies

Content intensity ranges from Gentle to Moderate across the series.

1
2
3
4
5
6
7
8
9
First book Latest book

Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Watts Library (9 books by Anthony D. Fredericks) lands at a grades 6–7 reading level, with average content intensity 1.3/5. Intensity varies from book to book, so check individual ratings in the list above.

The reading-order table above lists every book with per-volume reading level, age and intensity ratings so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.

Similar reading level, content intensity and themes.

Questions about the Watts Library series

What reading level is the Watts Library series?
Watts Library books are at a grades 6–7 reading level (average grade level 7), and HootRated recommends the series for ages 9–12. There are 9 books in the series.
What order should I read the Watts Library books?
Series numbers aren't available for most Watts Library books, so HootRated lists them by publication date: Animal sharpshooters (1999); Birds of prey (1999); Cannibal animals (1999); The Colorado River (1999); The Orinoco River (Watts Library) (1999); and 4 more.
What age is the Watts Library series appropriate for?
HootRated recommends Watts Library for ages 9–12. Content is gentle to moderate (HootRated intensity 1–3 out of 5). Intensity varies from book to book, so check individual ratings in the list above.