Coinciding with Giving Tuesday, philanthropists Warren Buffett, David Rubenstein, David Rockefeller and Bill and Melinda Gates join officials at the National Museum of American History Dec. 1 to announce a new initiative on American philanthropy.

The philanthropists will join professors, authors and arts leaders for “The Power of Giving: Philanthropy’s Impact on American Life,” an invitation-only event featuring panel discussions and talks examining the history of American philanthropy, current challenges and future innovations.

Following the morning event, the museum will unveil two cases of philanthropy-related objects in the “American Stories” exhibition on the second floor. The items include a register book that shows the 1,600 libraries financed by Andrew Carnegie and a dress designed for philanthropist Mary Eno Pinchot. The small exhibition serves as a teaser to a larger and permanent display that will open in November of 2016.

The museum will also host a two-hour public program beginning at 2 p.m. that will allow visitors to share their stories of giving.