UW-Madison Chancellor Biddy Martin on Friday released some of the emails requested of a history professor by the state Republican Party but said she is withholding others that “fall within the orbit of academic freedom.” Stephan Thompson, deputy executive director of the state Republican Party, had sought the emails under the state?s open records law after professor Bill Cronon wrote an essay on his blog critical of the role the conservative American Legislative Exchange Council has played in pushing anti-union legislation in Wisconsin and elsewhere.