Figure 3: Model Houses for Four Families, from Henry Roberts, The Model House for Families: Built in Connexion with the Great Exhibition of 1851 by Command of His Royal Highness, the Prince Albert, K. G. (Seeleys: London, [1851?]). In this plan, the children’s bedrooms are spatially demarcated from the parents’ bedroom, and two bedrooms are provided for children to ensure division of the sexes.