VisualThesaurus.com
Merriam-Webster Dict. & Thes.
WordSmyth Dict. & Thes.
dictionary.com
yourdictionary.com
britannica.com
acronymfinder.com
nonsensicon.com
nonsensicon.com
pseudodictionary.com

AllAreaCodes.com  

WordCentral.com

Yahoo! Reference

Clocks and Calendars:
timeanddate.com
time.gov
timezoneconverter.com

English Language:
askoxford.com/links/english/
Notes on Writing & Grammar
grammarbook.com
grammarnow.com
grammarlady.com
spellonline.com - spell checker
voycabulary.com
aphorismsGalore.com
wordlab.com
wordspy.com
An Elementary English Grammar Book

Grief:
AARP about Grief

History:
American Memory
AmericasLibrary.gov

Legal:
LegalEngine.com
LawInfo.com
FindLaw.com
lectlaw.com
FreeAdvice.com
legal.net
gigalaw.com

Quotations:
send-a-quote.com

Sign Language:
HandSpeak.com
Animated ASL Dictionary
wordlab.com

Writing:
Writing Handbook