An important idea in advertising is to enlist the services of others,
by making it to their interest to advertise your business. This is
often done by sending out charts, calendars, etc., containing useful
information, together with the advertisement. These, when properly
arranged and prepared in an attractive manner, will be placed in
a conspicuous place in the store, office, or home of the person
receiving them. Railway, insurance, and other corporations have vied
with each other in the elegance and attractiveness of their charts,
etc., until they have gone into the fine arts, and spared no expense
to captivate the public.