A—purchase confirmation
B—cable confirmation
C— advice of arrival
D— circular letter of credit
E—check register
F—advice of bill collected
G—after-sales warranty
H—agency bills
I—advice note
J—affidavit of means
K—affidavit of service
L—advice of bill accepted
M—advice of drawing
N—agency receipt
O—advice of bill paid
P—advice of authority to pay
Q—advice of settlement