• 1885 17 May – Robert Drummond's Birth Certification
• 1906 21 November – Fairbairn Lawson Combe Barbour Ltd Machinists, Engineers Millwrights Apprenticeship (age 21)
• 1907 9 April – James Reynolds Fitter Apprenticeship (age 22)
• 1909 30 December – Canadian Pacific Railway Service (age 24)
• 1910 18 June – National Machine & Tool (age 25)
• 1910 10 June – Pomona Manufacturing General Foundry & Machine Works National Machine & Tool (age 27)
• 1913 25 October – Hotpoint Electric Heating Company (age 28)
• 1917 21 January – Declaration of Intent (age 32)
• 1917 16 November June – Royal Engineers Inland Water Transport School (age 32)
• 1918 5 March – Inspiration Consolidated Copper (age 33)
• 1919 22 May – Royal Engineers Reserves Certificate (age 34)
• 1920 18 June – Moctezuma Copper (age 35)
• 1924 1 January – Robert Drummond's Work History (age 39)
• 1924 9 May – San Pedro Works (age 39)
• 1924 29 November – Marriage to Lucy Franks (age 39)
• 1928 15 May – Marriage to Norine Oberman (age 43)
• 1928 24 May – Honolulu Iron Works (age 43)
• 1928 28 December – Certificate of Naturalization (age 43)

• 1929 11 March – First Kamehameha Schools Letter of Appretiation (age 44)
• 1929 29 March – Second Kamehameha Schools Letter of Appretiation (age 44)
• 1929 2 April – US Civil Service Commission Rating (age 44)
• 1934 6 June – Hawaiian Air Depot (age 49)
• 1943 16 November – Transfer to Naval Air (age 58)
• 1944 20 June – First letter to daughter, Lois Drummond-Stoops (age 59)
• 1946 1 April – US Naval Air Demotion (age 61)
• 1947 24 January – Application for Retirement Annuity (age 62)
• 1947 8 August – Civil Service Annuity Certificate (age 62)
• 1949 24 February – Letter to daughter (age 64)
• 1949 21 May – Letter to daughter (age 64)
• 1950 23 July – Letter to daughter (age 65)
• 1950 7 October – Norine's Letter to Lois about Robert's Illness (age 65)
• 1950 19 October – Robert's Death Certificate (age 65)
• 1950 19 October – Robert's Funeral Service Prayer
• 1950 19 October – Robert's Funeral Service
• 1950 20 October – Robert's Obituary
• 1950 20 October – Robert's Death Notices in Papers
• 1950 22 October – Robert's Memorial Record
• 1950 22 October – Robert's Remembrance Card
• 1950 24 October – Letter from Robert's Sister about his death
• 1950 24 October – Papers of Interest Note
• 1950 1 December – Probate Notice
• 1951 8 January – Annuity Letter

• 1897 26 April – Norine Oberman-Drummond's Birth Record
• 1906 31 January – Norine's Brother's Affidavit about her Birth
• 1950 19 October – Norine's Estate Record
• 1950 19 October – Norine Oberman-Drummond's Life Story
• 1950 19 October – Robert Drummond's Estate Record
• 1876 1 January – Oberman Family Plot

Lucy Franks-Drummond's Record

• 1896 31 January – Lucy Franks-Drummond's Birth Certificate