Historical Text Archive (text version)
Bible Browser Basic Home Page
Full Text of 375 Greek and Roman classics
The Ancient World Web - The Ultimate Index
Odyssey
Maritime History on the Internet

Songs & Lyrics

Sea Chanteys & Links to Sea Folklore
Ballad Index
Digital Traditions
The International Lyrics Server
The Flying Pig Campfire Song Book: Frames || No-frames
Links to Lyrics
Songs Liedertexte Lyrics
The Lyrics Library
PDinfo -- songs in public domain in the US.
(May not be elsewhere).
Niki's Links Library: Music by Style or Cultural Origin
Folk Music home page

Calendars

CalendarLand
Calendar Information Page
International Festivals, Celebrations, and Holydays
The World Wide Holiday and Festival Page

Worldbuilding

Patricia Wrede's World-Building Questions for fantasy writers
Alternate versions, including text, made available by Mike Barker
World Building
World Building 101
World Builders
Planet Creation Kit
The 'Net Alternate History List

Language

Literary terms glossary and Handbook of rhetorical devices
The Literary Dictionary
Onelook dictionaries lookup
Ethnologue
Info on all known languages, and some of the others.
Dictionary of American Regional English (DARE)
American Dialects
American Dialect Society (no frames)
English Dialects and Creoles Around the World
American Name Society
Canadian Society for the Study of Names
Placename Survey of the United States
Scottish Placename Society