Sometimes, while working on my books, I crave some visual inspiration. I can't go back in time, but things like this help put me into the world my characters live in.
By the way, I do not agree with the romantic notion that this time period was when America was truly great. There were many injustices and crippling poverty. No time period can claim greatness more than another. (And I was also amused by the credits at the end: "curiosity of..." Spell checkers can't be completely relied upon. It occurs more than once!)