The University of Virginia Press has just published  
Of Courtiers And Kings: More Stories Of Supreme Court Law Clerks and Their Justices, ed. Todd C. Peppers and Clare Cushman (University of Virginia Press, 2015). 
Supreme
 Court justices have long relied on law clerks to help process the work 
of the Court. Yet few outside the Court are privy to the 
behind-the-scenes bonds that form between justices and their clerks.
In Of Courtiers and Kings,
 Todd C. Peppers and Clare Cushman offer an intimate new look at the 
personal and professional relationships of law clerks with their 
justices. Going beyond the book’s widely acclaimed predecessor, In 
Chambers, the vignettes collected here range from reflections on how 
serving as clerks at the Supreme Court impacted the careers of such 
justices as Stephen Breyer, Elena Kagan, William Rehnquist, John G. 
Roberts Jr., and John Paul Stevens to personal recollections written by 
parents and children who have both served as Supreme Court clerks. While
 individual essays often focus on a single justice and his or her corps 
of clerks—including how that justice selected and utilized the 
clerks—taken as a whole the volume provides a macro-level view of the 
evolution of the role of the Supreme Court law clerk. Drawing on a rich 
repository of such anecdotes, insights, and experience, the volume 
relates in a clear and accessible style how the clerking function has 
changed over time and what it is like for law clerks to be witnesses to 
history.
Offering a rare glimpse into a normally unseen world, Of Courtiers and Kings
 reveals the Court’s increasing reliance on law clerks and raises 
important questions about the selection, utilization, and influence of 
law clerks. 
One of the chapters is 
No College, No Prior Clerkship: How Jim Marsh Became Justice Jackson's Law Clerk, by John Q. Barrett, St. John's University School of Law:
In Justice Robert H. Jackson’s first four years on the Supreme Court of the United States (1941-1945), he employed, in sequence, three excellent young attorneys as his law clerks. They were, respectively, a former Harvard Law Review editor who then worked in the U.S. Department of Justice; a former Harvard Law Review president; and his successor in that law student high position. Jackson was happy with each law clerk’s work and fond of him personally.
Then, in 1947, Justice Jackson tried something different: he hired a Temple Law School graduate to be his next law clerk. This man had been a successful law student, but in a non-elite law school and, indeed, in its night school division. He had never attended college or clerked for another judge. He was “older” and married with children. His name was James Milton Marsh. This is the story of how he became, improbably, a Supreme Court law clerk.