Yes, the snip I gave was from Wikipedia. But they were quoting the David S. Wyman Institute for Holocaust Studies' "Holocaust Denial: A Global Survey - 2003":
A prominent former United States Senator, Mike Gravel (D-Alaska), appeared as a speaker at the June 2003 conference of a Holocaust-deniers' publication, The Barnes Review.snip
One of the speakers at the Barnes Review conference was Mike Gravel, former U.S. Senator from Alaska (1969-1981), who spoke on "The National Initiative" during the conference's "Political Options Seminar. During his years in the Senate, Gravel served on the Finance, Interior, and Environment & Public Works committees, chairing the subcommittees on Energy, Water Resources, and Environmental Pollution. According to his official biography, during his years in office Gravel became convinced that in America's current system of government, "the people's interests are subordinated to those of powerful special interests." As a result, in the early 1990s he established two nonprofit organizations, "Philadelphia II" and "Direct Democracy," which have undertaken a campaign known as "The National Initiative" to promote a Constitutional amendment to create a "Legislature of the People" that would "establish public policy and make laws outside the control of representative government but in parallel with our elected representatives."
Another speaker at the Barnes Review conference was Hutton Gibson, father of actor Mel Gibson, who spoke on "Traditional Catholicism" (one media report described his theme as "how to rebuild public respect for Christian institutions in the teeth of anti-Christian influences").
In April 2003, Barnes Review announced that it is the exclusive distributor for Jewish Supremacism, a new book by Holocaust-denier and former Ku Klux Klan leader David Duke. The journal's web site advertises the book as including "a panoramic summary of fifty years of findings by Holocaust revisionists who have left the official version of 'the Holocaust' in shreds." http://www.wymaninstitute.org/articles/2003-denialreport.phpSo we've got the David S. Wyman Institute implying that Gravel is a holocaust denier because he spoke at a conference organized the Barnes Review, an allegedly anti-semitic newsletter.