The Competitive Enterprise Institute (CEI) (Sourcewatch) is in the vanguard of submitting FOI requests for climate scientist communications. Their principle targets have been the NASA Goddard Institute for Space Studies in New York, NCAR in Colorado, the U. of Virginia, and the EPA among others. Their requests to NASA started in August 2007 and first concerned the minor correction of the GISTEMP dataset:
The responses were the posted online in the GSFC Electronic Reading Room.
Follow-up: Appeal (denied), Lawsuit (ongoing).