Every year, the IRS gives us a peek inside the wallets of the highest-earning 400 Americans. It's full of juicy facts like their average income ($318 million in 2014), how much they give to charity ($37 million each) and how much they pay Uncle Sam ($73.5 million). But there's one set of facts the IRS guards as carefully as the secret formulas they use to decide who gets audited — the top taxpayers' names.
That wasn't always the case. Back in 1924, the stock market was soaring, flappers were dancing the Charleston, and