Author James Spada has published the book Peter Lawford: The Man Who Kept The Secrets.
Spada states that Jeanne Carmen was Marilyn Monroe’s “best girlfriend” and that the two women had both dated Peter Lawford and were both curious as to why Lawford never made a pass at either of them.
Carmen and Monroe considered themselves “the sexiest things on two feet” and were perplexed at Lawfords seeming indifference to there feminine charms.
Carmen had often been present at parties at the Lawford beach house in Santa Monica; parties that included “Marilyn and Jack Kennedy”.
According to Carmen “Peter introduced me to the President at the beach house.”
At the height of Marilyn’s affair with Jack Kennedy, Marilyn said to Carmen “Can’t you just see me as First Lady?”
On August 3, 1962, Marilyn told Jeanne Carmen that she “was disturbed repeatedly throughout the night” by a series of crank calls. The caller sounded like a woman and kept saying the same thing over and over: “Leave Bobby alone, you tramp. Leave Bobby alone.”
The next night on August 4, 1962, Monroe telephoned Jeanne Carmen looking for sleeping bills but Carmen “begged off” because she was too “hammered” or drunk to drive.
Monroe was found later that night dead from a drug overdose that has never been fully explained
Source: ^ Spada, James (1991). Peter Lawford: The Man Who Kept The Secrets. Bantam Books, 143-44,183,301,306-8,315,317,320. ISBN 0-553-07185-8