The John Deere hats were made using a sizing chart I had found online a few years ago, but the combination of stitches and colours (and the appliques) were all created on the fly. So...I'm sorry, but there is not pattern to refer you to for those two.
Slouchy purple hat pattern: here
John Deere hat pattern: (winged it, sorry!)
Stay tuned to see the cardigan I started making as soon as these hats were shipped across the country! It might be a while before it's finally finished, but it will definitely be worth the wait. Yay, cardigan!