11.   CBS announced in May the acquisition of Outdoor Systems Inc., the largest single billboard company in the country.

12.   Campanile worked for a billboard company at the time.

13.   Even billboard companies have a grudging respect for the group.

14.   Gioia said he was not sure what measures the board might take, but it could involve legal action or encouraging businesses to boycott the two billboard companies.

15.   Just days after the paint dried on his mural, the gasoline station in front of the building where it resides sold its air rights to a billboard company.

16.   Leasing sides of buildings to billboard companies has become an important means of paying for development.

17.   None of this seems to deter the billboard companies, which say they do not get tickets.

18.   Now, with digital imaging, billboard companies can guarantee uniform results and timely installation.

19.   Representatives of Eller Media Co., the biggest billboard company in the country, contend that the big signs work well even when their messages seem murky.

20.   Rex Heinke, a lawyer representing Eller Media, a billboard company, said the laws were discriminatory.