Unknown photographer
NPG Ax17206
© National Portrait Gallery, London
The men in these portraits have not yet been identified by name. However, the drawings are known or believed to have been done in Europe based on evidence including their inscriptions, clues to the sitters' identities, and the appearance of the sitters and style of the drawings when images are available. Johnson studied and worked in Europe (in Düsseldorf, The Hague, and briefly in Paris) from 1849 to 1855. —AM
MacGibeny, 2022: Owner Albert Rosenthal's inscription "E. Leutze" seems likely to refer to German American artist Emanuel Leutze, who had a moustache. Johnson worked in Leutze's studio and portrayed his son Eugene Leutze in Düsseldorf. See the linked image of his carte-de-visite for his likeness.
Emanuel Leutze (1816–1868). German-American history painter; Düsseldorf Academy student and private instructor in whose studio Johnson worked on Leutze's Washington Crossing the Delaware in 1851.