"Gravity. It's not just a good idea, it's the law."

[James callan]

Gerry Mooney claims, on his website:
"I coined this phrase in 1977, and it has gone through a number of
iterations over the years, culminating in the full color, official
Gravity Poster, which I published in 1986."

http://www.mooneyart.com/gravity/historyof_01.html

Has Fred -- or anyone -- seen an earlier version of this? Or does
Mooney claim correctly?

        James Callan
        neologasm.com

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