This collection of papers focusing on the contributions of Margaret Henderson Blair, a pioneer in advertising and marketing practice and a champion of high quality, managerially relevant marketing research, provides insights into effective advertising. It captures five decades of Blair’s thoughts about the critical roles of the message in advertising, the necessity of reliable and valid measurement of advertising effects, and the centrality of persuasion as an outcome of advertising. Her thoughts are backed up by careful and readable research. Introductory chapters and editors’ comments prior to each chapter provide context to the collection as a whole and Blair’s individual presentations and papers are the heart of the book. It will appeal to advertising and marketing professionals who are seeking specific guidance for planning advertising and justifying expenditures, as well as marketing academics and scholars interested in the history of advertising.