A letter from Albert Einstein thanking a man from Chicago for helping Jews to escape Nazi Germany has been made public.
In 1939 the scientist wrote a series of notes thanking individuals for helping Jews during the Nazi period; until now historians had known about two but now a third has been revealed.
Einstein contacted to David Finck, a financier from New York, to "offer my sincere congratulations to you on the splendid work you have undertaken on behalf of the refugees". He had never met Mr Finck but was aware of his efforts to fund the emigration of Jewish refugees from Europe in 1939 before the outbreak of World War II.
Mr Finck's daughter, Enid Bronstein, told Chicago’s WGN TV that she had been keeping the letter in a safe deposit box since her father's death, but has now decided to share it.
