Here's the DKIM private key for s=bfi; d=email.usbank.com;:
-----BEGIN RSA PRIVATE KEY-----MIHzAgEAAjEAzjRsLDtT/UtJ+zRKRBq+ChIYj/zazMkg+Nx4OxkRLLH/bYkaS5dw
KrD+7yQRi1T9AgMBAAECMHjmYZoZeugi8ZB4myaNK2lKLN6XWU4CieWoWtdEDAg1
ip3m/zz95p8Dtc3yxEJlAQIZANlNNEQXL3mYD8xmFQCtbeulVpK16GMXPQIZAPLt
UHPd5zAK9dX1VFkQX3/ccxkXIR8QwQIYLG8OBfJbwdhnOpuRJd9Qv8PCTSOnTkPd
AhkAsmaHm9/NxWF3Mp7NR+8XQy4hNL7gqxDBAhkAqi8ieE4Doo6yw4IKLp/TrhrF
yeKc8ky7
-----END RSA PRIVATE KEY-----
Also works on several other domains with the same selector, e.g. email.800-flowers.com.