Ireland commemorated the 150th anniversary of the Great Famine in the 1990s. It was a contrast, in many ways, with the 100th anniversary in the 1940s. Then, only a few commemorations were held – the most significant of which was a commissioned volume of Famine history edited by R. Dudley Edwards and T. Desmond Williams (though not published until 1956), and the important 'Famine Survey' undertaken by the Irish Folklore Commission in 1945. Beyond these important cultural aspects, emigration was a continuing and embarrassing fact of Irish political life in the 1940s, and there was no natural constituency for the famine victims, who had died or emigrated. Some commentators were embarrassed that their ancestors had somehow fed themselves by inevitably not sharing food with the victims, a form of "Survivor guilt".