The category of "Correspondence" in books refers to a collection of written exchanges between two or more individuals, typically in the form of letters, emails, or other forms of written communication. These books often provide a unique insight into the personal lives, thoughts, and experiences of the correspondents, and can cover a wide range of topics such as love, politics, philosophy, and more. They offer a glimpse into the art of letter writing and the power of written communication to connect people across time and distance.

The "Prisoners" category of books typically includes stories that revolve around characters who are incarcerated or have been imprisoned at some point in their lives. These books may explore the harsh realities of life behind bars, the psychological toll of confinement, and the challenges of reintegration into society after release. They may also delve into themes of justice, redemption, and the human capacity for resilience in the face of adversity. Overall, the "Prisoners" category offers a glimpse into the complex and often overlooked world of those who have been incarcerated.

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