| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Bugg Bk Vee-dubb | 978-0-8431-1205-4 | 1989 | |
| Buttermilk | 978-0-8431-1565-9 | 1986 | Robin James |
| Butterwings | 978-0-8431-3920-4 | 1996 | |
| Crabby Gabby | 978-0-8431-1441-6 | 1985 | |
| Crickle-Crack | 978-0-8431-1909-1 | 1987 | |
| Dragolin | 978-0-8431-3825-2 | 1995 | |
| Dragolin | 978-0-8431-1165-1 | 1984 | |
| Feather Fin | 978-0-8431-0593-3 | 1983 | |
| Fibberbugg/Shrugg | 978-0-87475-600-5 | 1988 | |
| Flutterby | 978-0-8431-3821-4 | 1995 | |
| Glitterby Baby | 978-0-8431-1166-8 | 1985 | |
| Humbugg | 978-0-8431-1202-3 | 1989 | |
| Le Magicien Des Bois | 978-2-7625-4228-8 | 1984 | |
| Leo the Lop | 978-0-8431-7723-7 | 2002 | |
| Leo the Lop | 978-0-8431-0577-3 | 1980 | |
| Leo the Lop | 978-0-8431-0572-8 | 1979 | |
| Morgan and Me | 978-0-8431-4871-8 | 2002 | |
| Morgan and Yew | 978-0-8431-7651-3 | 2001 | |
| Morgan Morning | 978-0-8431-3923-5 | 1996 | |
| Muffin Dragon | 978-0-8431-7687-2 | 2001 | |
| Mumkin | 978-0-8431-1431-7 | 1986 | |
| Nitter Pitter | 978-0-8431-4870-1 | 2002 | |
| Persnickity | 978-0-8431-2303-6 | 1988 | |
| Pish-Posh | 978-0-8431-1449-2 | 1986 | Robin James |
| Poppyseed | 978-0-8431-2738-6 | 1989 | |
| Sassafras | 978-0-8431-3830-6 | 1995 | |
| Serendipity | 978-0-8431-3819-1 | 1995 | |
| Serendipity Early Readers 6 Pack Costco Assortment: from the Stephen Cosgrove Collection | 978-1-942603-25-2 | 2015 | |
| Shimmeree | 978-0-87191-792-8 | 1981 | |
| Squabbles - Buttermilk has the courage to get involved. | 978-0-8431-2836-9 | 1990 | |
| The Grumpling | 978-0-8431-0250-5 | 2003 | |
| The Grumpling | 978-0-8431-2739-3 | 1989 | |
| Trapper | 978-0-8431-0587-2 | 1981 | |
| Wheedle and the Noodle | 978-1-57061-730-0 | 2011 | |
| Wheedle on the Needle | 978-1-57061-628-0 | 2009 | |
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