Nelson Mandela penned hundreds of letters to loved ones, followers, government officials, and prison authorities during the 27 years he was held as a political prisoner, and soon theyll see the light of day.

Liveright Publishing, a division of W.W. Norton & Co., announced Tuesday that it will publish Mandelas extensive prison correspondence in two separate editions: a single volume containing some 250 selected letters due in July 2018 (timed to the centenary of Mandelas birth), and a more comprehensive two-volume collection to follow.

The Prison Letters of Nelson Mandelawill feature annotated facsimiles of some of Mandelas letters and a foreword by his granddaughter Zamaswazi Dlamini-Mandela; Sahm Venter, a former Associated Press reporter who covered the future South African presidents release from prison in 1990, will serve as editor.

Nelson Mandela

Credit: Thomas Imo/Getty Images

This collection of letters reminds us of the exceptional pressures on Nelson Mandela to succumb to a system which aimed to wipe him from the public consciousness and which expected him to die a prisoner, Venter said in the announcement.

His resilience and his determination, in the face of enormous odds, to maintain his dignity and authority throughout are apparent in this rich first-hand account of his life in prison.

Liveright acquired the rights to Mandelas letters from the New Zealand-based publisher Blackwell & Ruth, which has a long association with Mandela and the Nelson Mandela Foundation.