Carl Ferdinand Stelzner; Wilhelmine Therese Geffken (born 1834) and Pauline Louise Geffken (born 1835); January 1844; daguerreotype; picture size: height: 9.2 cm; width: 7.3 cm; in blue ink on label: Wilhelmine Therese Geffcken; Pauline Luise Geffcken; in black ink on label: D. p. 33; label: verso: Daguerreotyp von Stelzner; portrait painter; Atelier Caffamacherreihe N?32 in Hamburg; portrait photography; double portrait; girl; siblings; standing figure; half-length portrait; photography (art genre); Wilhelmine Therese Geffcken