Saturday marks 62 years since President John F. Kennedy's Dallas assassination and the man who took one of the most famous photos in American history will be talking about his experience.
Bob Jackson captured the Pulitzer-prize winning photo of Jack Ruby shooting Lee Harvey Oswald.
Jackson will be speaking in two separate programs at the Sixth Floor Museum at Dealey Plaza.
Museum Head of Curatorial Stephen Fagin says it is rare today to hear from such a primary witness.
"A professional, like Bob Jackson, if you're 30 years old in 1963, you're going to be in your 90s today," Fagin said.
"There are very few key participants from this story still left."
Tickets are still available through www.jfk.org.
Jackson recently donated his entire professional archive to the Sixth Floor Museum.
The museum programs on Saturday will go through years of Dallas history using Jackson's photographs.