"Staten Island (New York, N.Y.)" . . "F.W. Stewart Corporation." . . "Philadelphia (Pa.)" . . "Porcelain, Dental." . . "S.S. White Dental Manufacturing Company." . . . . "Dental cosmos." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Prescriptions, formulae, receipts, etc" . . . . . . . "The records of the S.S. White Dental Manufacturing Company are relatively complete. The greater part of the collection is concerned with patents, since the company maintained its competitive edge by constant improvement and innovation and was thus dependent upon patent protection." .