Ya’akov Pat. Kayn Amerike, Geschichten Vegen di vos Vandern [“To America. Stories of Those Who Roamed There.”]

In his youth, a student in Musar-based yeshivas, Ya’akov Pat (1890-1966) became a Bund activist in Warsaw, where he also developed a flair as a writer. He immigrated to the United States on the eve of World War Two. See https://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/pat-jacob.