NEW YORK (AP) — The late Sargent Shriver, the Peace Corps’ founding director and an architect of President Lyndon Johnson’s “War on Poverty,” left behind at least one unfinished project.

RosettaBooks announced Tuesday that it had acquired Shriver’s memoir “We Called It a War,” which he worked on in the late 1960s and was only recently rediscovered. Shriver’s friend and law partner David Birenbaum edited the manuscript, in which Shriver tells of his efforts to fulfill Johnson’s vow in 1964 to end poverty. The 348-page book, pared down from a “very raw” 500 pages, is scheduled for January.

Shriver was the husband of President John F. Kennedy’s sister, Eunice.

Shriver, who died in 2011, was a prominent liberal and government official in the 1960s who for many embodied a more idealistic time.