Folded and stained, drawing 16 seems to have been taken on site. It is very close to the design published as plate 1 in Soane's Plans, elevations and sections of buildings erected in the counties of Norfolk and Suffolk, 1788 (1789). The information file for Shotesham (SM library) has a reference to a Christie's sale (30 November 1983, lot 73) and a photocopy of a photograph (Conway Library neg. L12/19 (26) of a 'Plan of the Principal Floor' dated March 25 1788 that is either the original or a copy of drawing 14. This allows for a circa March 1788 date for the SM drawing. The Christie's drawing is inscribed: 'for Capitals complete £3.3 each / without the Neck', a reference to the Coade stone capitals for the pilasters.
Drawing 17 for the attic floor seems to tally with the ground floor plan (drawing 16). Interestingly, it shows eight dormer windows which were not carried out. The instruction that the ashlaring is 'not to be closed but left for Closets to be made hereafter wherever necessary' refers to the short vertical timbers that cut off the angle formed between a sloping wood roof and the floor. These support lath and plaster and before this is applied useful storage can be built-in where needed.