Emilie Bieber (1810–1884) was a pioneering nineteenth-century German photographer who ran a studio in Hamburg from 1852 until 1872.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Emilie_Bieber

Jenny Lind (also born on October 6, in 1820) by Emilie Bieber

1860s / Albumen carte de visite / 3-3/4″x2-3/8″ / National Portrait Gallery, London, UK

Emilie Bieber on Artnet: https://en.wikipedia.org/wiki/Emilie_Bieber

Further reading:
https://dewiki-de.translate.goog/Lexikon/Emilie_Bieber?_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=nui,sc
https://monovisions.com/emilie-bieber-biography-19th-century-pioneer-german-women-photographer/
http://www.luminous-lint.com/app/vexhibit/_PHOTOGRAPHER_1_Bieber_Family_01/2/0/0/