Books
Arranged like a children's alphabet book, Secret Codewords of the NSA contains images from a suite of 26 woodblock prints illustrating a selection of nicknames and codewords used by the National Security Agency to label their surveillance programs and operations. Many of these codewords come from files that were stolen and leaked by Edward Snowden in 2013, and the accompanying text describes some of what is known about these operations.
This is a print-on-demand book available through Blurb Books, which is where the following links will take you.