The Office of the Historian did a wonderful job with this. Download it here.
The new Diplomatic Security history, professionally researched and written by the State Department Historian’s Office, is an authoritative reference source and an archival record of the many critical duties, milestone events, prominent personalities, and worldwide locations with which DS has been associated over the past century. The first comprehensive, detailed history ever prepared, it is dedicated to the men and women who have served the Bureau of Diplomatic Security and its predecessors – the Office of Security (SY) and the Office of the Chief Special Agent of the U.S. Department of State – from the inception in 1916 up to the present.
This is some great stuff. I'm going down Memory Lane with it, reading about so many people I have worked for or with, and so many events I was privileged to see or participate in over the years.
It occurs to me that the publication of a document full of Matters of Official Concern makes those MoOC blog-able via the 'referenced from existing publicly available information' loophole. So, I shall have some posts coming up about people and things I was not free to discuss before. Yea, internet freedom!