Artheon MuseumArtheonMuseum

Portrait of a Man

Portrait of a Man by Marcus Aurelius Root, Samuel Root

Medium

daguerreotype

Dimensions

image (visible): 12.1 × 9 cm (4 3/4 × 3 9/16 in.) mat: 14.2 × 10.9 cm (5 9/16 × 4 5/16 in.) case (closed): 15.2 × 12.4 × 2.2 cm (6 × 4 7/8 × 7/8 in.)

Classification

Photograph

Department

CPH

Museum

National Gallery of Art, Washington, D.C.

Credit

Gift of Mary and Dan Solomon

Accession Number

2025.12.3

Rights

Public Domain

Art Historical Context

Step into the dawn of photography with *Portrait of a Man*, circa 1848 daguerreotype pioneering American photographers Marcus Aurelius Root and his Samuel Root. Captured a tiny silvered copper plate measuring just 12.1 × 9 cm, this intimate image exemplifies the daguerreotype process—photography's first practical method, introduced by Louis Daguerre in 9. The Roots, who ran successful studios in Philadelphia and Washington D.C., mastered this technique, producing sharp, mirror-like portraits that captured the Victorian era's poised formality. Daguerreotypes like this one were revolutionary, offering unprecedented realism and detail without the need for painting skills, making portraiture accessible beyond the elite. The process involved exposing a polished plate to mercury vapor and light, then fixing the image with gold chloride—a delicate, one-of-a-kind creation housed in a protective case (15.2 × 12.4 × 2.2 cm closed). Viewed at an angle, the image shimmers ethereally, inviting close inspection. This gift to the National Gallery of Art from Mary and Dan Solomon highlights photography's cultural shift: from artisanal craft to mass medium. In 1848 America, such portraits preserved identity amid rapid change, blending art and science in a single, gleaming glance.

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