Here is a list of sources that have been used for
The Twilight Zone/List of episodes. If you use another source to write something for the Episode section, please append to this list. If you want to use these sources to add anything else to the Twilight Zone episode information, be careful with copyright issues. Basic information such as original airdates, writer and notable cast can not be copyrighted, however a programme synopsis and a more complex compilation of facts not easily available (maybe complete cast lists?) could pose problems. If you want to add complete cast lists I personally recommend writing them down from any DVD's or VHS copies of the episodes you may have. That aside, here are the sources:
http://www.thetzsite.com/
http://www.scifi.com/twilightzone/