Dear NOAA and Seth, which 1930′s were you comparing to when you say July 2012 is the record warmest? | Watts Up With That?

http://wattsupwiththat.com/2012/08/08/dear-noaa-and-seth-which-1930s-were-you-referring-to-when-you-say-july-is-the-record-warmest/
So the real question is: which 1934 and 1936 is NCDC and Seth Borenstein comparing to? It looks to me like we might not be comparing real temperatures to real temperatures, but rather adjusted ones to highly adjusted ones.