"A Decade of Negro Extension Work, 1914-1924" is an important work by Oscar Baker Martin, in which the author addresses the history of the development of the Negro population over a period of ten years. The book explores the social, cultural, and political aspects of African American life during this period, highlighting their efforts in the struggle for equal rights and social justice. Martin guides the reader through the complex challenges faced by the Negro community, and also examines the achievements and difficulties in the implementation of development programs. This book is a valuable document of the history of the struggle for equal opportunities and the recognition of human rights, which sheds light on important aspects of the African American experience in the first half of the 20th century.