PK in the Terrarium collects the best posts from five years of Paul Kozlowski's blog on his life in books. It's a deeply felt and witty set of essays by an engaged reader, collector, champion and all-around lover of the written word. It is also the tale of a proud bookseller eager to share his passion with a distracted public, navigating a trade in the throes of upheaval and unpredictable change.