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Photograph of a Para rubber tree that has been tapped using the herring-bone method in the early 20th century.

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Illustration of a plantation rubber washing machine.

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Photograph of a Plantation tree that is 55 feet high and about 15 years old growing in front of a house and paddock in the early 20th century.

Scope and Contents File of printed articles relating to architecture and London County Council housing developments. The majority of the articles are reprints from architectural journals in the 1950s. There are a few press-clippings relating to architectural developments. There are also some typescript and manuscript notes by Percy Johnson-Marshall concerning a proposed article for the Town and Planning Association Journal , and a list of dissemination...

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Photograph of a Rambong or Ficus Elastica bush.

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Photograph of a person standing next to a rambong or Ficus elastica bush in Glen Bervie, Sumatra in the early 20th century.

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Photograph of a person standing at a table rolling para rubber "biscuits" with a rolling pen with rows of latex in coagulating pans on the shelf behind on an estate in Ceylon in the early/mid 20th century.

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Photograph of a tree in a forest with a single 'V' carved in the trunk for tapping on para rubber in the early 20th century.

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Sketch of a map of the Amazon valley indicating the locality on the Tapajos plateaux where the original stock of the plantation Hevea came from in 1876.

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Photograph of a sprophore growing on a young Hevea plant at half its natural size and cultivated in a laboratory.