1. IOR/X/12109/1 Reference (shelfmark): IOR/X/12109/1 Title: Model A Collection Area: Map Collections Languages: English Date Range: Late 19th century-Early 20th century Extent: 1 sheet
2. IOR/X/12109/2 Reference (shelfmark): IOR/X/12109/2 Title: Model B Collection Area: Map Collections Languages: English Date Range: Late 19th century-Early 20th century Extent: 1 sheet
3. IOR/X/12109/3 Reference (shelfmark): IOR/X/12109/3 Title: Models C and D Collection Area: Map Collections Languages: English Date Range: Late 19th century-Early 20th century Extent: 1 sheet (damaged and split in 4 parts)