- Grolier Educational Corp., Danbury, Conn., c1994
- Grolier Educational Corp., Danbury, Conn., 2000
- Grolier Educational Corp., Danbury, Conn., c1996
- Grolier Educational Corp., Danbury, Conn., 1995
- Grolier Educational Corp., Danbury, Conn., c1994 i.e. 1993
- Grolier Educational Corp., Danbury, Conn., c1995