Webb's Radio

Webb's Radio Ltd, 11 Wellesley Street East, Auckland, produced radios and kitsets under the 'Ariel' brand, up to about 1970.  I have recently acquired an Ariel 'Hercules' which uses discrete transistors, (see photos in separate post) and I'm trying to date it.  Does anyone know if Webbs produced a catalogue, and if so whether any still exist covering this period, say after 1960?

Thanks!

Lawrence