This collection, drawn from the files of the India Office Political and Secret Department archives in the British Library, consists of detailed secret and confidential reports from Frontier Agents in the tribal borderlands of Pakistan and Afghanistan, from the constitution of the British Indian 'North-West Frontier Province' through 1949. Material has been arranged in five groups:

• BIN-1. Memoranda of information on North-West Frontier affairs, 1901-1911
• BIN-2. Intelligence diaries, 1911-1930
• BIN-3. Annual reports and arrangements for intelligence gathering, 1922-1942
• BIN-4. Weekly intelligence diaries and summaries, 1931-1947
• BIN-5. Waziristan disturbances, 1937-1949