I actually just ordered two shirt jackets from Carl (Shirtmaven).
My mom (who's an antiques dealer and buys and sells a lot of textiles) bought some gorgeous old checked wool flannel. Sort of like a smaller version of a tablecloth check, one in cream and red and one in cream and blue.
I thought about something like this Pendleton:
but ending up going with something like this, but with a less sporty, more upright collar:
Like DieWorkwear mentioned, I find this kind...