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Sample of indigio produced by E Coli, 1970-1986

1970-1986

2 lumps of indigo powder, provenance unknown, 1851-1930

2 lumps of indigo powder

1851-1930

One of two specimens of indigo, produced from the leaves of indigofera tinctoria.

Natural indigo dye sample

1914

4 lumps of indigo powder, from West Africa, 1871-1930

4 lumps of indigo powder

1871-1930