For 70 years, Queen Elizabeth II reigned over the UK and Commonwealth countries and although she met 13 US presidents, there's one she didn't had the chance to meet in person - Lyndon B. Johnson (LBH).
LBJ served as US President from 1963 to 1969 when Queen Elizabeth was in her late 30s and early 40s.
Although the two corresponded on multiple occasions there is no documented evidence they ever met.
According to LBJ Library, neither extended an invitation for the other to visit their countries. Although LBJ had a trip potentially planned for London, details were never finalized.
At various points, LBJ met with Prime Minister Alec Douglas-Home and PM Harold Wilson.
And her Majesty even met LBJ's wife First Lady, 'Lady Bird' Johnson during a trip to Texas in 1991 but the former president was not in attendance.
\u201cToday, President Trump meets with Queen Elizabeth. We've received questions on whether President Johnson ever met with the Queen. In short, it's complicated, but to our best knowledge, LBJ and the Queen never met.\n\nOur archivists have provided some more details. Please see below.\u201d
It is unclear why the Queen and LBJ never had a formal meeting as it is customary the two leaders meet at some point during a president's term, but it may have been a case of bad timing.
\u201cThe Johnson family, the LBJ Library, and the LBJ Foundation mourn the death of Queen Elizabeth II who passed away\u00a0today at the age of 96. \n\nIn May 1991, Lady Bird Johnson and then Governor Ann Richards hosted a reception for Queen Elizabeth and Prince Philip at the @LBJLibrary.\u201d