No, I haven't, actually
I'm reading Bury the Chains, by Adam Hochschild, which is about the campaign to abolish the slave trade in the British Empire. I was pointed at the book by the commentary to Amazing Grace, where they referred to it but said it wasn't any good for them, since its argument is the William Wilberforce gets far too much of the credit - and since they were making a movie about him, you can see their problem. I'm about halfway through and finding it fascinating.
But he mentioned the Brookes slave ship diagram, and this is what he said:
You have seen this diagram. Rare is the illustrated schoolbook of world history, or book or television documentary about the slave trade, that does not show the famous top-down schematic view of the Brookes, with the slaves' bodies as close together as anchovies in a can.But I hadn't.
I looked it up when I got to work, and I'd never seen it either.
I wonder if that's a feature of my age, or where I went to school - a liberal town, but still in Tennessee - or where he did (New York), or what. But although we studied slavery, I don't remember that "iconic" image.