[or-roots] What do KP.B and PO mean?

[dgoodma02 at comcast.net]

While researching my ggf Thomas Goodman I came across a list of persons, one of which was my ggf. The first noame on the List was KB.B followed by self, the next name was PO followed by other.  Any one have an Idea what the KP.B and PO mean?  The list was of 21 males, from a number of varius states from NY to Michigan.  Any one have any Idea?

--
Bob Goodman
USAF Retired
University Place, Washington