[DATE, ex. Wednesday, June 11, 1998] 

[NAME, BANK AND ADDRESS, ex.
John Smith
XYZ Bank
1234 First Street
Suite 567
Anycity, Anystate  85245]

Dear [NAME, ex. John Smith], 

We have recently approved the addition of one signing officer to our Account No. [ACCOUNT NO., ex. 12345678]. This individual's name is [NAME AND TITLE OF NEW SIGNING OFFICER, ie. Sara Smith, Controller].

Would you kindly forward to us the necessary documents to give effect to this change. We will arrange to have them signed and returned to you as soon as possible. 

Please note that all other signing officers, as per your records, remain the same.

Sincerely, 

[YOUR NAME, ex. Jill Jones]