The BBC program on The Archive of the Planet (more than 50 countries with more than 72,000 autochromes + 100 hours of film): millionaire French banker and philanthropist Albert Kahn who, between 1908 and 1930, used his personal fortune to generate what is now generally acknowledged to be the most important collection of early color photographs in the world to end up penniless (post the stock market crash).
Part 1:
You can probably find other episodes online!!