Today the New York Public Library opened their pop up exhibition "Dearest Jackie: On The Death Of JFK," coinciding with the 50 year anniversary of his assassination. The installation, inside of their 42nd Street building, is a small display on the third floor and examines the various ways people mourned the loss of the slain president. You can tell your own story here, and click through for a brief preview of the exhibit.

Here is the letter of condolence from JFK advisor Arthur Schlesinger, Jr. to Jackie Kennedy (from the Library's Manuscripts and Archives Division) transcribed:

Dearest Jackie:

Nothing can mitigate the shame and horror of this day. Your husband was the most brilliant, able, and inspiring member of my generation. He was the one man in whom the country could confide its destiny with confidence and hope. He animated everything he did with passion and gaiety and wit. To have known him and worked with and for him is the most fulfilling experience I have ever had or could imagine.

Dearest Jackie, the love and grief of a nation may do something to suggest the feeling of terrible vacancy and despair we all feel. Marian and my weeping children join me in sending you our profoundest love and sympathy. I know that you will let me know when I can do anything for you.

With abiding love, Arthur

The installation will run through December 1st, and also includes a print from Andy Warhol’s Flash November 22, 1963 series, which incorporated newspaper and television images connected with the assassination of President John F. Kennedy.