A floor plan or drawing of a structure, from a book about travels in Babylonia Persia and the Caucasus. The Caucasus, Persia, Babylonia, etc. The Caucasus, Persia, Babylonia, etc., with notes, maps, plans, surveys, views, and other drawings of interesting objects; by Sir Robert Ker Porter, K.C.H., during his travels in those countries in the years 1817-1820. Source: Add. 14758 vol.2 f.144.