The former was marked as overdue in library records, indicating that Nickell had borrowed but never returned it.
Investigators have long had the ability to seek out library records in tracking leads in criminal inquiries.
According to library records, a lot of the reading had taken place while the Enterprise was in the Klingon patrol corridor.
Nor does the federal government provide any protection for the privacy of library records.
They had to make do with library records from universities across the Confederation.
The government has zealously protected the Patriot Act's power to examine library records.
It is not known how many times federal agents have actually used the law to gain access to library records because that information is classified.
The library records were salvaged, along with the 2,000 volumes of the children's collection.
Law enforcement should be able to get information, including library records, about specific individuals it reasonably suspects of a crime.
But Section 215 allows requests for library records for large numbers of people without any reason to believe they are involved in illegal activity.