Heinrich Tønnies
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Johan Georg Heinrich Ludwig Tønnies was an early German-Danish photographer who had a studio in Aalborg, Denmark.
Heinrich Tønnies: self-portrait
Heinrich Tønnies: Jens Bangs Stenhus (c. 1890)
Daguerreotype
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Daguerreotype was the first publicly available photographic process, widely used from the 1830s to 1850s. "Daguerreotype" also refers to an image created through this process.
Daguerreotype portrait of a daguerreotypist displaying daguerreotypes and cases pictured in an airtight frame, 1845
Daguerreotype of Louis Daguerre in 1844 by Jean-Baptiste Sabatier-Blot
The first authenticated image of Abraham Lincoln, taken soon after his election to Congress in 1846, attributed to Nicholas H. Shepard