The book "The History of the United Co-operative Baking Society Ltd.: Fifty Years of Birth 1869-1919", written by William Reid, is an important document that reveals an important stage in the development of the cooperative movement in the field of baking. The author examines in detail the formation and development of the association during its fifty years of existence, noting the key events, achievements and challenges that the organization faced. The book is a valuable source both for historians studying cooperatives and baking, and for a wide range of readers interested in the history of entrepreneurship and social innovation.