Parke Davis collectible ink blotter from the 1940s advertising Diphtheria Toxoid-Pertussis Vaccine. The advertisement states that "with three injections ... you can protect infants against both of these serious diseases ... expediting development of…
Parke Davis collectible ink blotter from the 1940s advertising Dipth-Pertussis (Sauer) Alum Precipitated. The advertisement states that it is "for simultaneous immunization against diphtheria and pertussis" and that "each cubic centimeter represents…