889 entries

A chronological index of all 889 sheet-music publications catalogued in sinatraology.com's Sheet Music database -- individual song sheets as well as folios and songbooks -- each linked to one or more songs from Sinatra's recorded or performed repertoire (per that site's own Song catalog, previously captured in Appendix 18). Unlike the Releases browse endpoint (Appendix 19), this section is inherently Sinatra-scoped and required no artist-field filtering. Most entries (742 of 889) are individual song sheets; the remainder are folios/songbooks collecting multiple songs, in which case the song list is capped at 12 titles here with a count of any remainder. The site also catalogues 1,221 cover-image references across these entries (credited mostly to eBay listings and private collections); those images are not reproduced here, consistent with this chronology's established practice for other sinatraology.com appendices. Entries are grouped by decade and sorted chronologically within each decade.