1930 NSW Electoral Roll - Dalley - Leichhardt East
ROBSON Ivy Florence, 20 Emily street, home duties
ROBSON Lionel Alexander Irving, 20 Emily street, traveller
1936 NSW Electoral Roll - Parkes - Summer Hill
ROBSON Ivy Florence, 1 Flat, 165 Old Canterbury rd., Summer H., home duties
ROBSON Lionel Alexander Irving, 1 Flat, 165 Old Canterbury rd., S.H., com. ar.
1943 NSW Electoral Roll - Lang - Lakemba
ROBSON Ivy Florence, 101 Boulevarde, Wiley Park, home duties
ROBSON Lionel Alexander Irving, 101 Boulevarde, Wiley Park, co-execu.
1949 NSW Electoral Roll - Banks - Lakemba
ROBSON Ivy Florence, 101 Boulevarde, Wiley Park, home duties
ROBSON Lionel Alexander Irving, 101 Boulevarde, Wiley Park, co-execu.
1954 NSW Electoral Roll - St George - Bexley North
ROBSON Ivy Florence, 9 Peacock street, Bardwell Park, home duties
ROBSON Lionel Alexander, 9 Peacock st., Bardwell Park, coy. director
ROBSON Lionel Paul, 9 Peacock st., Bardwell Park, salesman
1958 NSW Electoral Roll - Barton - Oatley
ROBSON Ivy Florence, 48 Wentworth ave., Blakehurst, home duties
ROBSON Lionel Alexander Irving, 48 Wentworth ave., B'hurst, director
1963 NSW Electoral Roll - Mitchell - Durall
ROBSON Ivy Florence, Lot A, Colbran avenue, Kenthurst, orchardist
ROBSON Lionel Alexander Irving, Lot A, Colbran av., K'hurst, orchardist
1968 NSW Electoral Roll - Hughes - Miranda
ROBSON Ivy Florence, 84 Wyralla road, home duties
ROBSON Lionel Alexander Irving, 84 Wyralla road, no occupation
1977 ?