If you’re simply looking to read another well-researched and well-written biography of a major political figure in the United States during the middle of the 20th century, then you can’t do much better than Caro’s The Power Broker. But if you’re trying to best understand the complex issues of urban renewal during that period, then I suggest consulting the volume edited by Hilary Ballon and Kenneth T. Jackson that accompanied a three-part exhibition in New York on Robert Moses in 2007 (W. W. Norton, 2007). In contrast to Caro’s biography, this book is profusely illustrated. It also provides a thorough catalogue of Moses’ projects and a series of incisive essays by contributors from a variety of academic fields.

Martha Biondi’s chapter in particular analyzes the issue of racism. In contrast to the Post article you’ve linked, Biondi doesn’t focus on the highly contested details like bridge height and the temperature of swimming pool water. Instead, she places Moses’ projects, such as the development and racial segregation of Stuyvesant Town, within the political and legal landscape of New York at the time. I find her approach to be much more persuasive and productive when discussing the history of institutional racism and its relationship to the built environment.

Another recent book that does an excellent job of tackling the history of urban renewal in the US by examining the career of a single controversial figure is Lizbeth Cohen’s Saving America's Cities : Ed Logue and the Struggle to Renew Urban America in the Suburban Age (Farrar, Straus and Giroux, 2019). Logue held a role similar to Moses’ in New Haven and Boston and later took over as leader of the New York State Urban Development Corporation. His legacy as a planner and administrator has also been the subject of some well-founded accusations of racism.