Severo Ochoa de Albornoz was a Spanish physician and biochemist, and winner of the 1959 Nobel Prize in Physiology or Medicine together with Arthur Kornberg for their discovery of "the mechanisms in the biological synthesis of deoxyribonucleic acid".
This is set of 2 papers signed by Severo Ochoa and one signed by Arthur Kornberg. They both show slight yellowing of the paper from age.
The Ochoa is 5.5 x 4.5 inches in size and the Kornberg is 4,5 x 5 inches in size.
