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Publication Order of Cluster Books
| Cluster / Vicinity Cluster | (1977) | Hardcover  Paperback  Kindle |
| Chaining the Lady | (1978) | Hardcover  Paperback  Kindle |
| Kirlian Quest | (1979) | Hardcover  Paperback  Kindle |
| Thousandstar | (1980) | Hardcover  Paperback  Kindle |
| Viscous Circle | (1982) | Hardcover  Paperback  Kindle |