Atlas Hist County Boundaries
http://publications.newberry.org/ahcbp/

Birth Date Calculators
http://www.cyndislist.com/births.htm#Birthdate

Calendar Converters
http://www.cyndislist.com/calendar.htm#Converters

Cousin & Relationships
http://www.cyndislist.com/cousins.htm#Charts

Geographical Names
http://geonames.usgs.gov/

Inflation Calculator
http://www.westegg.com/inflation/

US Dollar Historical Value
http://www.measuringworth.com/uscompare/

Weather History
http://www.weatherbase.com

Wolfram|Alpha
http://www.wolframalpha.com