Hi again Cyberjack
I searched the West Australian newspaper database (only goes back to 2004 but i thought they might have a story from perth in that era). They only had one brief mention of DE Withers and Co - it says they were a 'manufacturers representative' and in 1962 one company they represented was the german tool maker Dowidat (now Gedore).
I am glad i have been of some assistance, the information on ODK is so useful and varied across so many different makes and models, I found it interesting that there was nothing about this edger on here. But with so many different little manufacturers there have been throughout time, there is so much to find out; which is why it interests me so much.
regards
Tyler