Which C.S. Lewis book was published posthumously in 1964 under the title A Grief Observed?

A Grief Observed was published posthumously in 1964 under that title.

The book records C.S. Lewis’s intense grief after the death of his wife, Joy Davidman, from cancer in 1960. Lewis first published the work in 1961 under the pseudonym N.W. Clerk, partly to keep the deeply personal writing separate from his public identity.

The book takes the form of candid reflections on bereavement, prayer, doubt, anger, memory, and the struggle to understand suffering. Its directness differs sharply from Lewis’s more systematic apologetic works and has made it an important modern account of grief.

After Lewis’s death in 1963, the work was republished in 1964 using the title A Grief Observed. It is sometimes mistaken for a conventional autobiography, but it is primarily a spiritual and emotional journal about mourning.