Do you really think the FBI believes that asking librarians to keep records of customer useage is an efficient way to read the customers minds? Do you really think that the FBI foreign counter-intelligence squad has nothing better to do than keep a database of who is reading Che Guevara memoirs?
My understanding of the Library Awareness Program, was that is was originally targeted at "suspicious users" (e.g., people with funny names, or that looked kind of foreign, or spoke with an accent -- say somebody like Henry Kissinger) that were using technical libraries. After all, they might find something there that they could use against the US of A. Certain librarians or assitants were approached to see if they would be snitches. Often times this took place without the head librarians even being notified of the program. There is a book about this written by a librarian. It has "Library Awareness Program" somewhere in its title. Eric