Chen-Ning Franklin Yang Autograph Erna Sack mostly signed in blue ink

mostly signed in blue ink

signed and dated in dark ink "Miguel Angel Asturias - Prix Nobel - 1967"

shows Cecil Frank Powell in a chest-up portrait

Signed card - with typed description (in German - covered by the passepartout)

shows Robert Stolz as conductor

Chen-Ning Franklin Yang Autograph Erna Sack mostly signed in blue inkPrinted scientific article signed, three pages, 8 x 10,5 inch, scientific article entitled `Condition of Self Duality for SU(2) Gauge Fields on Euclidean Four Dimensional Space` by C. N. Yang reprint from `Physical Review Letters` (Vol. 38, 13 June 1977, No. 24), signed and inscribed on the front page in black felt tip "from the author C. N. Y.", with very mild signs of wear in nearly very fine condition.