 Emma, Elizabeth and Susannah lived with Petit and looked after the pictures until their death in the 1890s whence they went to a son of Maria Jelf.Petit was a close friend of and worked closely with Philip Delamotte, who became Professor of Art at King's College, London.Delamotte was one of the leading proponents of photography as it emerged in the UK, and recognised as one of the leading teachers of watercolour art and photography.