The First Mention of the 'Greenhouse Effect' in The New York Times was on Sept. 25, 1955
Yes, that was a long time ago.
See: “... man-made increase in the best of carbond dioxide around the earth may be 'having a greenhouse effect on our climate.'”
See: “That there is a change, no meterologist denies.”
See: “Perhaps the riddle will be solved ... in 1958.”
See more here.