NOAA in 1989, per NYT: No global warming since 1895:
While the nation’s weather in individual years or even for periods of years has been hotter or cooler and drier or wetter than in other periods, the new study shows that over the last century there has been no trend in one direction or another. The study, made by scientists for the National Oceanic and Atmospheric Administration was published in the current issue of Geophysical Research Letters. It is based on temperature and precipitation readings taken at weather stations around the country from 1895 to 1987.
What do you know about that? That was before Al Gore knew better and convinced so many people. The excellent Chicago-based NewsAlert unearthed it.