- Publisher: Philomel Books Publisher Record # 337
- Webpages: us.penguingroup.com
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Note: Known chronology:
- Early1980s: a division of The Putnam Publishing Group
- 1987 - Feb 1998: a division of The Putnam & Grosset Group
- Sep 1998 - May 2003: a division of Penguin Putnam Book for Young Readers
- Sep 2003- 2008: a division of Penguin Young Readers Group
Publication series data
Years When Books Were Published
| unknown | |||||||||
| 1980 | 1981 | 1982 | ------ | 1984 | ------ | ------ | 1987 | 1988 | 1989 |
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 |
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
| 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 |
| 2020 | 2021 | 2022 | 2023 | 2024 | ------ | ------ | ------ | ------ | ------ |
Publication Breakdown by Author: