SpyNumbers.com

Features

A Station Profiles of the various Spy Stations, along with schedules.
Spy Numbers Station Database enter your loggings, and view the database
The Enigma list of station identifiers, commonly used when referring to stations.
MOSSAD E10 Schedules NEW!
Some tips for new spy radio enthusiasts, along with some observations.
A Bibliography of Numbers articles that I am working on.
Some speculation about Numbers Stations.
Although not a numbers station, KKN50, officially run by the US State Department, was still an interesting operation.
Take a look at theWarrenton Training Center The organization that runs several sites known for Spy Numbers Transmissions within the US.
One of the sites is located in Remington, Virgina.
Several years ago, a supposed Warrenton Training Center NCS Frequency List came out. You be the judge.

There aren't too many numbers station resources on the net, but here are the ones that I'm aware of.
Please let me know of any others.

Defense Analyst Pleads Guilty as Spy Washington Post - Cuban Spy
Spies Hide In Strange Shortwave Signals ran in USA Today.
NPR recently did a piece on numbers stations for their Lost and Found Sound segment.
MacOpinion ran The Number of the Beast about the Warrenton Training Center.
There's a Salon article about Spy Numbers Stations listeners
ENIGMA, which publishes a twice-annual newsletter, is a Euro-centric club devoted to numbers stations.
Mike Chace's Numbers page. A very detailed description of several stations, along with operating schedules.
Numbers and Oddities - Ary Boender
CONET - They produced a CD of Numbers Stations, several years ago.
Sounds Off The Wireless Includes recordings of Numbers Stations
New Star Broadcasting Station A site devoted to this Chinese Numbers Station
Simon Mason has an excellent site, including an on-line version of his book Secret Signals
The Numbers Game Many recordings of numbers stations

Other sites of interest

Echelon Information

The National Security Agency (NSA) has a web site available, which includes information on the VENONA project, which was the program which suceeded in breaking many Soviet messages sent during and after WWII, related to espionage here in the US. These decoded messages allowed the arrest and conviction of many of the "Atomic Spies" including the Rosenbergs. Though the Soviets used one time pads, they made the critical error in using them more than once.