In July 1980, two weeks before the Gdansk shipyard strikes, Roman Laba arrived in Poland as an American graduate student. He stayed there for almost two and a half years before he was arrested and expelled from the country for "activities noxious to the interests of the Polish state." Laba had set himself the ambitious task of documenting the history of Poland's free trade union. Martial law was in force for the last year of his stay, but even during that time he continued his rescue of the unique historical materials that contribute so much to Roots of Solidarity. The book uses this...