11. IOR/L/F/7/2570 Reference (shelfmark): IOR/L/F/7/2570 Title: Collection 398/11: Salaries and Establishments: Income Tax: Government of India, constitution of a special Income Tax Department. Establishment of Central Board of Revenue. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1921-1925 Extent: 1 File
12. IOR/L/F/7/2571 Reference (shelfmark): IOR/L/F/7/2571 Title: Collection 398/12: Salaries and Establishments: Income Tax: Assam Income Tax Department, Commissioner's allowance. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1923 Extent: 1 File