Major Contributors
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| 50,000 | Al von Ruff | These were entries from various encyclopedias that were pounded in via keyboard. |
| 50,000 | Dissembler | This is a webbot that cruises numerous sites and populates the database. Dissembler entered about 95% of all the data entered in the ISFDB in 2003-2006. |
| 20,000 | NESFA database | The NESFA database is also part of the Locus Index through 1989. This was the first major database merged with the ISFDB. |
| 15,000 | Michael J. Cross database | Mike's database was the 3rd major database to be integrated. Mike also contributed a ton of UK magazines, and probably 40% of all the review data. |
| 15,000 | David G. Grubbs | The ISFDB started as an awards database, and our initial release was heavily populated with titles from David's award database. |
| 15,000 | User Submissions | These were entered primarily from 1996 through 1999. |
| 10,000 | John Boston database | John's database was the 2nd major database to be integrated. John also entered a ton of books as forthcoming books editor. |
| 5,000 | Cary Thomas | Cary supplied 15 to 20 years worth of Analog and Astounding magazine data. |
Major Contributors Since May 2006
See http://www.isfdb.org/cgi-bin/topcontrib.cgi for an up to date listing of significant contributors.