The Equal Justice Library is now located at the Georgetown Law School Library:
“The National Equal Justice Library (NEJL) is the first and only institution dedicated to documenting and preserving the legal profession’s history of providing counsel for those unable to afford it….” [Link to National Equal Justice Library homepage.]
Their collection includes oral histories, like this one about the early history of the Legal Services Corporation in Arkansas:
Oral History Interview with Hillary Rodham Clinton, conducted by Victor Geminiani (1991-07-21)