They certainly have. The first time I had a polygraph, they said to never mention the code word to anyone...I later did a search on the code word itself, and came up with about a 1/2 dozen websites!!
My son and I visited the Air and Space Museum of the Smithsonian two years ago and they had an exhibit on Corona (an early satellite reconaissance project). Unbelievable. Actual satellite FILM from the bird. Blew me away.