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Postcard from the Statistical Research Institute, Delhi, addressed to the Statistical Adviser, showing the results of a cotton harvest experiment in Ludhiana in 1966, with data from farmer Karnail Singh and a wet weight of 3 kilograms 800 grams. The reverse features a 3 annas stamp, a postmark from Delhi dated 21-10-1966, and a signature of V. L. W. Karnail Singh.