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In page Dahlia:

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In 1835 Thomas Bridgeman, published a list of 160 double dahlias in his "Florist's Guide".[9] 60 of the choicest were supplied by Mr. G. C. Thornburn of Astoria, New York, who got most of them from contacts in the UK. Not a few of them had taken prizes "at the English and American exhibitions".[citation needed]