Industrialist whose pork packing plant, Armour and Co., introduced refrigeration and revolutionized methods of canning. Scarce fountain pen signature and sentiment, "Sincerely, Philip D. Armour" on an off-white 3.5 x 1.75 card. Matted with two computer generated images to an overalI size of 12 x 13. In fine condition, with uniform toning. RRAuction COA.
