Is this of any importance? No. S, aka M+W, happened to get about the right answer, but this provides little or no confirmation of GW theory; the models were too simple. If they had got the wrong answer, no one would care, so you're not allowed to make much of the right answer; you can't retrospectively make it into a test. Gavin somewhat disagrees with me, but in matters of climate models I know who I'd trust more. I said this about Hansen 1981 somewhere too, but can't find that right now.
Sawyer, 1972, impartially consider'd
Today marks the 50th anniversary of a remarkable research paper on global warming, says CarbonBrief: Man-made Carbon Dioxide and the “Greenhouse” Effect by J Sawyer. I have a PDF of it available here, for reasons I can't recall; and Archer has one here; mine appears to be of slightly higher quality.
It is said that the article makes one of the first predictions of future global warming – that temperatures would rise 0.6C by the end of the 20th century. Which is a bit odd, because the "prediction" just takes the 2.4 CS value of Manabe and Wetherald and scales it to a 25% CO2 rise by 2000. The article got a 35th birthday too (in 2007, oddly enough) but everyone has forgotten that. And ScepticalScience noted it in 2014.