User summary: This impressive fan-created index notes every commercially published item containing data on INVALID OBJECT ID=, type=family and indexes it by topic or area. Pages 1-3 enumerate indexed products; page 4 enumerates abbreviations used; pages 5-1042 presented the topical index. Encyclopedia Greyhawkania Index is purely an index - it does not contain any setting data, per se. Note that numerous early versions of the index circulated as ASCII text files and other formats. The version noted here stabilized abt. 2003 and was subsequently converted to PDF format abt. 2008.