p 83 1st edtiion of the big book
I beg your pardon friends
Some people cannot be seen-we sent them an honest letter.
a few examples are:
if someone we owe amends is in prison and we can`t get in to see them,write them a letter.Same if we are in prison and they can not/will not come see us.
people who have passed on,if it bothers you,do write them a letter,I have done that in the past and addressed it to their last address and sealed it up and burnt it and prayed before I did it