Yes there was a Special Services Division of the Private Radio Bureau
when McNamara wrote his letter in 1989. Having been in contact on 20
meters with Kenneth Black in the U.K., I received a copy of this letter
from the recipient, who said he received it via regular mail in the UK.
In addition, I flew to DC and interviewed Mcnamara, together with
Counsel Tom Fitzgibbons, for the express purpose of airing over ham
radio. Accordingly, the interviews ran for a few weeks over Baxter's
Network, then called the IARN.

Bob Sherin, W4ASX