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Credit
Dr. Lynas trade mark compound wintergreen flavor colored compound of oil of wintergreen and oil of birch for ice cream, jellies, pastry, custard, candies, etc. : use sparingly till flavored to taste : 2 1/4 fluid oz / m'f'd by Dr. J. B. Lynas & Son, Logansport, Ind. Public Domain Mark. Source: Wellcome Collection.