…was made 100 years ago, on January 25, 1915. (Well, actually, that was the first official transcontinental phone call; the line had actually been completed and tested by July of 1914, but the big PR event was timed to coincide with something called the Panama-Pacific exposition.) Alexander Graham Bell was in New York City and repeated his famous request “Mr Watson, come here, I want you” into the phone, Mr Watson then being in San Francisco.
Long-distance calls from the East Coast had previously reached only as far as Denver; it was the use of vacuum-tube amplifiers to boost weak signals that made possible true transcontinental calling.
Here’s the NYT story that marked the occasion. Note that the price announced for NYC-SF calling was $20.75 for the first three minutes and $6.75 for each minute thereafter. According to the CPI inflation calculator, these numbers equate to $486.38 and $158.21 in today’s money.