This pattern has been written up my Marinke and looks really great. She says;
A while ago I stumbled across the most amazing vintage crocheted afghan on Etsy and I knew I had to make one just like it!
Because I couldn’t find a pattern anywhere I sat down and figured out the pattern myself :)
Why not hop on over to her blog at A Creative Being she has lots of other patterns and tutorials that I’m sure you’ll like.