http://ashlandleather.com
Ashland has a wide range of designs and styles for wallets, with choices of shell cordovan or Horween's chromexcel, which is front part of a horsehide, and some Horween dublin as well I think. If you want Ashland, check out mass drop from time to time, its very popular.

http://shop.mitchell-leather.com/Famous-Mo...-Wallets_c6.htm
Personally, I went for Mitchell's money clip wallet with shell cordovan -- which is usually sold out and he only has limited quantities. This is simply due to the fact that there's limited supply of Horween's shell cordovan. All I can say, the wallet is amazing and I foresee it lasting a very very long time.

Why Ashland has shell cordovan in stock? Tsk tsk.. owner/founder of Ashland leather is also the operations guy @ Horween.