Hello Peter.
From extensive research right around the world, I never cease to be amazed at how close to home, some one has an answer for me, once they know of my research endeavour. It took me 50 years to get some agricultural research papers out of Tomsk, Siberia. Only to then learn that an elderly gentleman who swam at a West Auckland beach where I went swimming, personally knew the Chief Librarian who finally replied to my emails, supplying two of the four papers, mentioned in the English, Dairy Science abstracts of 1964.
Therefore I would suggest that you follow up with enquiries about 12 Beverly Place New Lynn, and probable employment by Wormald’s [Tyco International]. Was Harry a member of any local sport or social club? [Inhouse or public]
Use the social media available to you, that allow discussion of the possibly living. Contact the NZ Fire Protection Assn, re their publications etc for info about work colleagues. Look for any Auckland branch bulletins, or history reviews of Wormald’s presence in Auckland. Social Clubs etc. Someone will still remember Harry. It's just a case of getting your quest out there.
The house that Google shows as 12 Beverly Place New Lynn is similar to “State” housing of that period. Are you sure the house was not leased / rented?
Unfortunately the Library at Henderson is closed to public visits at this time.
All the best, Alan.
