Finally found something new to index! The register I am doing is for Metcalfe County in Kentucky. The second page (which is for the post office locality of Cave Ridge)has the following written on line 8:
"dicontinued - Feb 8, 1950 - effective - Feb 28, 1950 - mail to wisdom"
Does this get keyed? I didn't see anything on it (unless I missed it) and there isn't a name on the line so my inclination is that we don't. Just had to check first though.