Shortly after, he covered the Prague Spring and the Soviet-led Warsaw Pact invasion of Czechoslovakia in 1968 and chronicled the events in "Rowboat to Prague", published in the United States in 1972. Josef and Zdena Skvoreckys' Toronto publishing house, 68 Publishers, translated the book into Czech in 1975, which has been smuggled to Czechoslovakia, where it became one of the underground classics. It was republished in 1980 as "So Many Heroes" and translated into numerous languages.