With Volume XI: The Caribbean Diaspora, 1910–1920, Duke University Press proudly assumes publication of the final volumes of The Marcus Garvey and Universal Negro Improvement Association Papers. This invaluable archival project documents the impact and spread of the Universal Negro Improvement Association (UNIA), the organization founded by Marcus Garvey in 1914 and led by him until his death in 1940. Volume XI is the first to focus on the Caribbean, where the UNIA was represented by more than 170 divisions and chapters. Revealing the connections between the major African-American mass movement of the interwar era and the struggle of the Caribbean people for independence, this volume includes the letters, speeches, and writings of Caribbean Garveyites and their opponents, as well as documents and speeches by Garvey, newspaper articles, colonial correspondence and memoranda, and government investigative records. Volume XI covers the period from 1911, when a controversy was ignited in Limon, Costa Rica, in response to a letter that Garvey sent to the Limon Times, until 1920, when workers on the Panama Canal undertook a strike sponsored in part by the UNIA. The primary documents are extensively annotated, and the volume includes twenty-two critical commentaries on the territories covered in the book, from the Bahamas to Guatemala, and Haiti to Brazil. A trove of scholarly resources, Volume XI: The Caribbean Diaspora, 1910–1920 illuminates another chapter in the history of one the world’s most important social movements.