He was 78 years old ; however , library catalogues give his birth date as 1895 .
Dewar died in Waimate where he spent his retirement years on 8 December 1969 .
Dewar was 78 years old ; however , library catalogues give Dewar 's birth date as 1895 .
Dewar died in Waimate where he spent his retirement years on 8 December 1969 .