The life of John F Kennedy is to be examined this week at Queen's University to coincide with the 50th anniversary of his inauguration.
Presidential historian Professor Robert Dallek, author of JFK's biography An Unfinished Life, will focus on the Democrat's 1,000 days in the Oval Office.
Prof Dallek will address an audience at Queen's on Thursday before giving a talk at University College Dublin the following week.
Queen's vice-chancellor Professor Peter Gregson said: "Queen's is fortunate to be playing host to one of the most authoritative writers on Kennedy. The university is also very proud of its links with the United States.
"American academics and students contribute significantly to the life of Queen's, which has many connections with prestigious institutions such as Georgetown University, Vanderbilt University and the National Cancer Institute.
"The Kennedy Memorial Lecture Series, which began in 2009, strengthens these links further and we are delighted to welcome a speaker of Professor Dallek's calibre to Queen's."
Chris Johnston founded the Kennedy Memorial Lecture.
"President Kennedy's legacy can speak to each and every one of us," he said.
"His memorable words also provide a powerful motivator to encourage everyone to use their talents in making a contribution to society."
News of the lecture comes as current US President Barack Obama is in Dublin for a visit to his ancestral home in Moneygall, Co Offaly.