![History Bell System 100 years ago [telecom]](https://forums.cabling-design.com/media/22615/conversions/6035379ae61020.71011900-medium.jpg)
Here is a link to a Bell Telephone ad of 100 years ago. They were pledging value for their revenues but the need to have sufficient income.
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(you may scroll through the rest of the issue).
While the magazine is illustrated, there is much more fine print text than there would be in later years, and certainly today.