Archived yellow pages and telephone directories are important tools in local historical research, trademark litigation,, a well known New England artist.
Available advertising space varies among publishers and ranges from bold names up to four color twin page ads ("double trucks").
Local phone companies that publish yellow pages directories rely on their own customer lists and include business listings that are provided by phone service providers (ILEC's).
Business owners that utilize phone services other than the local phone company (typically a Bell Company) should make certain that their information has been sent to the publisher for printing in upcoming directories.
The majority of listings are plain and in small black text.
The yellow pages publishers generate profit by selling advertising space or listings under each heading.