Editor’s Note: This article was originally published by The Art Newspaper, an editorial partner of CNN Style.

CNN
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The Smithsonian’s National Portrait Gallery (NPG) in Washington, DC, has acquired the earliest known photograph of a US First Lady.

The quarter-plate daguerreotype of former First Lady Dolley Madison, wife of fourth US president James Madison, dates from around 1846. It joins a host of other early photographic portraits in the NPG’s collection, including what is believed to be the earliest photograph of a US president, an 1843 daguerreotype of John Quincy Adams by Philip Haas, which was acquired by the…