3rd November 2019

Advertising in The Sun (Sydney) from the 1930s:

18th September 1932, in a full page advert for Grace Bros. Ltd:

20th February, 1934:

Erinoid was a trade name for casein plastic, so called because the milk came from Ireland (Erin). It was made at the Lightpill Mills in Stroud from 1914-1980s.

17th March, 1935.

29th March ,1936.

2nd June, 1936.

21st November, 1937.

 

https://www.gracesguide.co.uk/Erinoid

http://plastiquarian.com/?page_id=14228

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