Collection 2/1H Civil Aviation - London to Karachi air mail service: agreement between Sir Joseph Bhore and Sir Christopher Bullock concerning proposed extension to Australia
Collection 2/1J Civil Aviation - Proposed England to Australia air mail service: arrangements with Imperial Airways and Trans - Continental Airways concerning subsidy and mail charges
Collection 2/1K Civil Aviation - Proposed England to Australia air mail service: undertaking of Imperial Airways to dispose of shares in Indian Trans - Continental Airways Ltd