Cylindrical glass tube with cork stopper containing a yellow substances labelled as 'Picric acid 1 gr', made by Burroughs Wellcome and Co. from `Tabloid' medicine chest used by Walter Wellman for Transatlantic balloon flight, 1910, made by Burroughs Wellcome and Co., 1900-1910 Picric acid from 'Tabloid' medicine chest used for a transatlantic balloon flight in 1910 1900-1910