With Elena Kagan’s nomination by President Obama to the Supreme Court, the Library of Congress has developed a resource page on her. This page includes websites, videos, articles and books written by her, and more.
The Sullivan Library also has Supreme Court resources within its collection. Here is a very small sample:
347.7326 H675S The Supreme Court: An essential history (Amazon)
347.7326 H867R The Rehnquist Court: Understanding its impact and legacy (Amazon)
347.73 J6370 Oral arguments and decision making on the United States Supreme Court (Amazon)
347.7326 SL56T Television news and the Supreme Court: All the news that’s fit to air? (Amazon)
Other books can be found nearby in the 347.73‘s.