Drawing 5 is for the addition of a part-basement with stair and cellars. The two areas labelled 'Earth' have no access and serve as foundations and thus are not be dug out. Drawing 6 corresponds quite closely to the ground floor plan of drawing 3. The drawings relate to the proposals shown in drawings 3 and 4 and presumably date to 1791. For later drawings for/of the basement cellars see drawings 38, 65 and 79.