A number of folks
claim they invented the drink:
Definition of Smoothie:
http://www.wordreference.com/definition/smoothie
Back in 1974, the Smoothie was already something
that we were service as a matter of fact. That was the year
I met Harpo, or it might have been 1973. We already had
signs in the store with the words Smoothie. I did not sense
even in 1974, that it was a recent invention, but had already
been a word he used for many years.
The store closed in 1977.
It existed for ten years.
That would have been 1967.
I am sure folks will show up who can pinpoint
when they first had a Smoothie at Harpos.
I will ask the Hamel Brothers, who were our neighbors.
The Hamels:
http://www.alaskaair.com/www2/Destinations/munged_qs/shopping.asp(city+SAN)
your eg