This primary source comes from the Collection RR-WHPO: White House Photographic Collection.
Full Citation: C21052-9; First Lady Nancy Reagan Reading Mail for Pennies for Pandas at the White House; 1984; Reagan White House Photographs, January 20, 1981–January 20, 1989; Collection RR-WHPO: White House Photographic Collection; Ronald Reagan Library, Simi Valley, CA. [Online Version, https://www.docsteach.org/documents/document/first-lady-nancy-reagan-reading-mail-for-pennies-for-pandas-at-the-white-house, April 28, 2024]