Of course there are a multitude of resources on the web, but here are some selected links. Thank you Ngaire
The Coromandel Heritage Trust site.
A History of Pye Radio Ltd. in Waihi, New Zealand, by Dick Bing.
Mill Stream Walkway Historic Features: research and interpretation of the goldmining features at Waihi's Mill Stream and base of Union Hill.
Te Aroha Mining District Working Papers: Dr Philip Hart, Historical Research Unit, University of Waikato.
The Waihou and Ohinemuri River Scheme, 1911 - 1928. Donald Cochrane.