- check_box_outline_blankSurvey of India Offices, Calcutta33
- check_box_outline_blankStanford's Geographical Establishment9
- check_box_outline_blankIntelligence Division, War Office8
- check_box_outline_blankEdward Stanford6
- check_box_outline_blankRoyal Geographical Society3
- check_box_outline_blankBritish North Borneo Chartered Company2
- check_box_outline_blankJulius Bien & Co.2
- check_box_outline_blankWar Department, Adjutant General's Office, Military Information Division2
- check_box_outline_blankColonial Engineer's Office1
- check_box_outline_blankGeorge Philip & Son1
- check_box_outline_blankIllustrated London News1
- check_box_outline_blankIntelligence Branch, War Office1
- check_box_outline_blankOffice Chief Engineer, Division of the Philippines1
- check_box_outline_blankR.G.S Proceedings1
- check_box_outline_blankRowe & Co.1
- check_box_outline_blankRoyal Asiatic Society, Straits Settlements’ Branch1
- check_box_outline_blankSurvey of India, Office of the Trigonometrical Branch1
- check_box_outline_blankSurveyor General's Office, Calcutta1
- check_box_outline_blankSurveyor General, Straits Settlements1
- check_box_outline_blankW. & A.K. Johnston1