and book-hunting information
| ISBN | Cover | Binding | Edition | Date | Publisher | Cover Artist |
| 0-525-31007-X |  |
HC | 1st. | 4/1981 | Dutton Children's Books (now Penguin Putnam) |
James Nazz |
| 0-525-31007-X | |
HC | repr. | 1/1986 | Dutton Children's Books (now Penguin Putnam) |
James Nazz |
| 0-140-34581-7 | 
|
PB | repr. | 5/1991 | Penguin (Puffin) |
Linda Thomas (Ward?)
(also Strange Attractors (4/91) |
| 0-140-34581-7 |
|
PB | repr. | 5/1991 | Penguin Books Canada |
Linda Thomas (Ward?)
(also Strange Attractors (4/91) |
| 0-356-13390-5 | 
|
PB | repr | 7/1988 |
Macdonald & Co Publishing 3rd Floor, Greater London House Hampstead Road London NW1 7QX UK (might be part of Little,Brown UK 011-44-020-7911-8000) |
Ivor Arbuckle |
| 0-356-13989-1 |
|
HB | repr | 7/1988 | Macdonald(UK) | Ivor Arbuckle |
| 0-553-23797-7 | 
|
PB | repr | 5/1991 |
Bantam (212) 782-9000 (now part of Random House) |
Richard (Rick) Courtney |
| 0-606-04926-6 | ?> | ? | ? | ? | Demco Turtleback 4810 Forest Run Road Madison, WI 53704 (608) 241-1471 |
? |
| 0-844-66795-1 | HC | ? | 1/1995 | Peter Smith Publishing 5 Lexington Ave Magnolia, MA 01930 (508) 525-3562 |
? | |
| 0-833-56801-9 | ? | ? | 10/1999 | Econo-Clad Books 2101 N. Topeka Blvd. Topeka, KS 66608 1-800-255-3502 |
? | |
| 0-765-35238-9 | PB | ? | 9/29/2005 | Starscape | ? | |
| 0-606-34326-1 | PB | ? | 10/01/2005 | Turtleback library binding for Starscape | ? | |
| 1417688475 | Library binding | ? | 9/29/2005 | Starscape | ? |
