SGS added a multi-volume index to make the GMNJ more useful to researchers. The card file contains thousands of large cards which index cemeteries, church records, abstracts of deeds, marriage records, military records and family information. The Kent Collection is described in more detail in the Winter 1988-89 edition of the SGS Bulletin. These are items contributed by SGS members such as newspaper clippings, handwritten notes, short typescripts, etc. Within each state section are both general state resources and county-specific materials.
Holdings vary widely by state and particular periodical.