Albert Einstein ca. 1910
source: http://www.kingsacademy.com/mhodges/03_The-World-since-1900/01_The-Last-Days-of-the-Gilded-Age/01c_The-New-Material-Technology-2.htm

Albert Einstein ca. 1910

source: http://www.kingsacademy.com/mhodges/03_The-World-since-1900/01_The-Last-Days-of-the-Gilded-Age/01c_The-New-Material-Technology-2.htm