Herbert Newton Casson, The History of the Telephone
“ The average European family sends three telegrams a year, and three letters and one telephone message a week; while the average American family sends five telegrams a year, and seven letters and eleven telephone messages a week. This one na-tion, which owns six per cent of the earth and is five per cent of the human race, has SEVENTY per cent of the telephones. And fifty per cent, or one-half, of the telephony of the world, is now comprised in the Bell System of this country. ”
