1. IOR/F/4/892 Reference (shelfmark): IOR/F/4/892 Title: Board's Collections Vol 892 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1790s-1820s Extent: 1 volume
2. IOR/F/4/892/23224 Reference (shelfmark): IOR/F/4/892/23224 Title: Scope & Content: Implementation of Lieutenant Schalch's plan for constructing a canal between the Hooghly and the Ganges, Vol 4. Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1795-Jul 1823 Extent: 1 file
3. IOR/F/4/892/23225 Reference (shelfmark): IOR/F/4/892/23225 Title: Scope & Content: Implementation of Lieutenant Schalch's plan for constructing a canal between the Hooghly and the Ganges, Vol 5. Collection Area: India Office Records and Private Papers Languages: English Date Range: Jul 1822-May 1823 Extent: 1 file