Large ink ‘umbrella’ signature, “Thos A. Edison,” on an off-white 5 x 3.25 card, affixed to a 5 x 6.75 album page which is also signed, “Wagner Jauregg, 12. Marz 1929,” and “Dr. Max Planck, 13 Marz 1929.” Reverse of the page is signed by contralto Hermine Kittel and actress Kathe Dorsch. In fine condition, with some scattered light toning and rippling. RR Auction COA.