1. WOMAT/RAS/CHI/180/3/1 Reference (shelfmark): WOMAT/RAS/CHI/180/3/1 Title: Scope & Content: Original drawings Collection Area: Map Collections Languages: English Date Range: 1905 Extent: 16 map sheets
2. WOMAT/RAS/CHI/180/3/2 Reference (shelfmark): WOMAT/RAS/CHI/180/3/2 Title: Scope & Content: A slightly enlarged compilation of the original drawings at CHI/180/3/1 Collection Area: Map Collections Languages: English Date Range: 1905 Extent: 1 map sheet