Do you have any actual examples? I googled your suggested term and found a bunch of people outside the US(lots in China a few in the UK, one in Canada) and a bunch of others who wouldn't qualify as accredited investors.
The great depression started before the SEC existed and was a completely different world.
Back to my original question I asked if it was easy to find examples. I have no doubt that you can find a few since fraud happens. But I think you'll find it difficult to find more than a handful.
