Atelier J. Hamann; Johann Hinrich W. Hamann; management of the steamer Cobra; albumin paper; black and white positive process; sheet size: height: 12.30 cm; width: 16.50 cm; in lead: D. Cobra? Schiffsleitung; numbered: verso: 189; Atelier; J. Hamann; Hamburg; Neust. Neustr. 65 - 68 (crossed out); specialty: photography under artificial light; in and outside the house; handwritten completed in lead: Valentinskamp 41; Tel. 342337; portrait photography; group portrait; ship's crew; passengers; work clothes