Traveling salesmen or others whose work takes them back to a city
occasionally will find great help in keeping a written list of the
names of those whom they have met in each city. Carry the book with
you and as you are traveling towards the city, exercise your mind by
going over the list and making a visual review of the faces and names
of those whom you may expect to meet when attending to your business
in this city. It will prove to be valuable to refresh your memory from
time to time.