The Original Plot of A Song of Ice and Fire

Hello! I thought you all might find this interesting. HarperCollins released photographs of George R.R. Martin's letter to them from 1993 outlining the plot details of his original trilogy. A lot of things changed between then and now, including the addition of 4 extra books to the series. The letter is three pages long and can be seen here, here, and here. The end is redacted, so presumably that's something that hasn't changed and is still yet to come. Very interesting!