When did the media start using "Summer of Love" re 1967?

Factual Questions
1

Anyone know if the mass media was referring to the summer of '67 as the “summer of love” in 1967 or was this something that caught on years later? Would, let’s say, Grace Slick have known what you were talking about if you mentioned the “summer of love” in the fall of '67?

any help is appreciated!

Chris

2

The term “Summer of Love” was originated by the promoters, and picked up by the media:

3

Wikipedia to the rescue (emphasis mine):

4

Thanks!