Many books on the topic will be under the following subject headings or their narrower terms. Aspects of Robert Kennedy's assassination may have some relation to the JFK assassination. Some subject headings that may be useful include:
Four days; the historical record of the death of President Kennedy
Author: United Press International
Published: 1964
Call number: E842.9 .U55 1964
The JFK assassination debates : lone gunman versus conspiracy
Author: Michael L. Kurtz
Published: 2006
ISBN: 0700614745
Call number: E842.9 .K89 2006
The assassination of John F. Kennedy : a comprehensive historical and legal bibliography, 1963-1979
Author: DeLloyd J. Guth
Published: 1980
ISBN: 0313212740
Call number: Z8462.8 .G87
The Oswald file
Author: Michael Eddowes
Published: 1977
ISBN: 0517530554
Call number: E842.9 .E32 1977
Whitewash IV : top secret JFK assassination transcript
Author: Harold Weisberg
Published: 1974
ISBN: 0911606076
Call number: E842.9 .W415
The assassination of Robert F. Kennedy : a searching look at the conspiracy and cover-up, 1968-1978
Author: John G. Christian
Published: 1978
ISBN: 0394402731
Call number: E840.8.K4 C5