These six Western Electric/Bell System phone cartons span about three decades.
In the 1960s and 70s, money was spent on multi-color printing and attractive graphics. Earlier and later, the packaging was simpler.
The latest carton didn't even have typesetting -- the product labeling was from a hand-printed image.
The oldest carton was held together with tape. Newer cartons were designed to fold together, and stay together with no tape.