| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Cat Diaries: Secret Writings of the MEOW Society | Paperback | 978-1-250-07328-0 | 2016 | Betsy Byars · Betsy Duffey |
| Cat Diaries: Secret Writings of the MEOW Society | Hardcover | 978-0-8050-8717-8 | 2010 | Betsy Byars · Betsy Duffey |
| Dog Diaries: Secret Writings of the WOOF Society | Paperback | 978-1-250-07329-7 | 2016 | Betsy Byars · Betsy Duffey |
| Dog Diaries: Secret Writings of the WOOF Society | Hardcover | 978-0-8050-7957-9 | 2007 | Betsy Byars · Betsy Duffey |
| Escape by Night: A Civil War Adventure | Paperback | 978-1-250-05055-7 | 2014 | |
| Escape by Night: A Civil War Adventure | Hardcover | 978-0-8050-8825-0 | 2011 | |
| Garage Sale Fever | " | 978-0-06-022905-4 | 1993 | |
| Guinea Pigs Don't Talk | Paperback | 978-0-395-92865-3 | 1998 | |
| Lewis and Clark and Me: A Dog's Tale | Hardcover | 978-0-8050-6368-4 | 2002 | |
| Surviving Brick Johnson | " | 978-0-395-98031-6 | 2000 | |
| The Shepherd's Song: A Story of Second Chances | " | 978-1-4767-3820-8 | 2014 | Betsy Duffey |
| The SOS File | " | 978-0-8050-6888-7 | 2004 | Betsy Byars · Betsy Duffey |
HarperCollins · Henry Holt and Company · Houghton Mifflin · Simon & Schuster · St. Martin's Press