Los Angeles , California ( CNN ) -- Marilyn Monroe 's sultry rendition of `` Happy Birthday '' sung for President John F. Kennedy 's 45th birthday celebration marked the actress ' last major public appearance before her mysterious death in August 1962 . Tuesday , which would have been Monroe 's 84th birthday , marked the public debut of a rare image of Monroe with Kennedy and his brother Robert F. Kennedy together after the May 19 , 1962 , party . The black-and-white photo , taken by White House photographer Cecil Stoughton , showed Monroe still wearing the infamously tight-fighting , sheer rhinestone-studded dress she wore when singing earlier at Madison Square Garden . President Kennedy appears to be turning away from the camera , something he rarely did , while his brother , the U.S. attorney general , looks toward them . `` There is no other known photo of Bobby [ Kennedy ] with Marilyn or JFK with Marilyn , and it 's not because they were never photographed together , '' said filmmaker Keya Morgan , who now owns the only original prints of it . `` In fact , they were photographed together many times , but the Secret Service and the FBI confiscated every single photograph . '' Stoughton , who sold the prints to Morgan a year before his death in 2008 , told him agents missed one negative in their search , he said . `` The Secret Service came in when he was developing the negatives and basically confiscated all the ones of Jack , Bobby with Marilyn , '' Morgan said . `` The only one that survived is the one that was in the dryer . '' Historian Arthur Schlesinger Jr. , who was an aide to President Kennedy , appears in the photo holding a drink and cigar and wearing a broad smile . Schlesinger 's personal journal , published in 2007 , included his impression of Monroe at the private gathering . `` The image of this exquisite , beguiling and desperate girl will always stay with me , '' Schlesinger wrote . `` I do not think I have seen anyone so beautiful ; I was enchanted by her manner and her wit , at once so masked , so ingenuous and so penetrating . '' He wrote that Robert Kennedy was paying great attention to Monroe at the gathering , which was at the Manhattan home of Arthur and Matilda Krim . `` Bobby and I engaged in mock competition for her ; she was most agreeable to him and pleasant to me , but one never felt her to be wholly engaged , '' Schlesinger wrote in a passage included in his book `` Journals : 1952-2000 . '' While the relationship between the Kennedy brothers and Monroe has become a documented part of history , photographer Stoughton was reluctant to allow the image to become public until after former first lady Jacqueline Kennedy 's death in 1994 . Morgan said he bought access to the negative while working on an upcoming documentary about the actress 's death , `` Marilyn Monroe : Murder on Fifth Helena Drive . '' Stoughton , in interviews for the film , told Morgan the story behind the first lady 's refusal to attend her husband 's birthday gala . `` He 's the one who told Jackie that Marilyn was going to be at the celebration , and her exact words were 'Screw Jack , ' and she left the room and she did not go to the famous celebration , '' Morgan said . Morgan 's prints show details not clear in low-resolution , cropped copies that made their way onto the internet after the photo was licensed for a book about Monroe in 2004 . Singer Harry Belafonte is seen in the background with his wife , talking to a man that Stoughton told Morgan was comedian Jack Benny . Beverly Hills art appraiser David W. Streets , who reviewed the prints and their history for CNN , called them `` the real McCoy . '' `` This is a very significant piece of American and celebrity history , of fine art photography , '' Streets said . Since Stoughton was a U.S. Army captain and was using a government-owned camera and film , the images themselves are in the public domain . But access to the negative , which Stoughton secretly kept , was valuable , Streets said . Stoughton made and signed 10 prints for Morgan , 30 inches by 30 inches . Nine of them go on sale Tuesday at the Art & Artifact Gallery in West Hollywood , California . The 10th print was given to singer Michael Jackson two years ago , Morgan said . Morgan was a friend of the pop star 's , who was a big Monroe fan .
Rare photo taken after Marilyn Monroe sang for JFK 's birthday . Photographer said Secret Service seized all other JFK-Monroe photos . White House photographer kept photo secret for decades . Tuesday would have been Marilyn Monroe 's 84th birthday .