The majority of research about Bletchley Park centres on the code breaking efforts during World War II. Work at the Park laid the foundation for today's modern computers. Most certainly, the Park is rich in telecoms history...

• Visit the official site of the Bletchley Park Trust on-line.
  
  

• Bletchley Park Post Office - Selling First Day Covers from the Park.
  
  

• Learn about Codes and Ciphers in the Second World War-The Website for the history, science and engineering of cryptanalysis in World War II-created by Tony Sale.
  
  

• Codes and Ciphers Heritage Trust (CCHT) - Built in 1944, Block H at Bletchley Park was designed to house the world’s first digital computers, the Colossus machines. The CCHT hopes to establish a National Computer Museum in this Grade II listed building.
  
  

• Garat's HaY-Home to the "Y" (Wireless Intercept) Services - An essential link in the code-breaking chain.
  
  

• The Turing Bombe Rebuild Project by John Harper-everything you need to know about the Bombes.
  
  

• Bletchley Park Navaids -Photos of when the CAA was still in the Park in 1989.
  
  

• RETRO beep...The Computer Museum at Bletchley Park
  
  
  

• World War Two Memories Project -If you have recollections of WWII, this site would like to hear from you.
  
  
  

• Letchworth Garden City - Heritage Foundation

	Official Souvenir Guide This 28 page A4 size booklet is a handy guide to "The Secrets of Bletchley Park" and how to find your way around the site.
	There are many books available, but an easy to read and well illustrated summary of both the history and preservation of the Park up to the end of the 1990s is Ted Enever's:- "Britain's Best Kept Secret"- Ultra's Base at Bletchley Park. This revised edition moves the story on from 1994 to events up to 1999.
	Bletchley Park P E O P L E by Marion Hill tells the story of the Park in great detail and is packed with recollections from civilians, servicemen and women who all played a vital role in the war effort.
	Harold 'Doc' Keen and the Bletchley Park BOMBE. Code name CANTAB by John Keen. "It took an engineer of Keen's outstanding ability to translate that design (the code-breaking ideas of Alan Turing ) into a workable machine. The 'Bombe' a huge device with tens of thousands of separate parts, and 50,000 terminals for four miles of wiring."

And further repeats...

Parts 1 & 2 on Saturday 26th February 2000 at 19:00 Hrs
Part 3 on Saturday 4th March 2000 at 19:00 Hrs
Part 4 on Saturday 11th March 2000 at 19:00 Hrs

END of Tour.