After almost 40 years of investigating the shrouded history of UFOs throughout North America, Grant Cameron is getting some recognition.

Ever since his own reported UFO sightings in Manitoba, Canada, in 1975, Cameron has doggedly researched the subject. Using the Freedom of Information Act to obtain documents and information, and traveling to many presidential libraries, Cameron became focused on the relationship of American presidents and UFOs.

At the recent 22nd annual International UFO Congress in Arizona, Cameron -- co-author of "UFOs, Area 51, and Government Informants" -- was honored with the researcher of the year award for his outstanding achievement in the field of UFO studies.

Cameron's websites, presidentialufo.com and hillaryclintonufo.net, offer insight about past leaders' interest in the UFO subject. If you're looking for a one-stop place for UFO records, Cameron has a trove to sift through:

  • On Eleanor Roosevelt's 1950 weekend television talkshow, "Today With Mrs. Roosevelt," the outspoken former first lady showed great interest during her interview with an airline captain about a rapidly moving circular UFO with windows that crossed the path of his plane.
  • Video testimony from a former New Hampshire state legislator who claimed to have seen an official briefing document to Dwight Eisenhower informing the president of an alleged continued presence of extraterrestrials in America and suggesting Eisenhower could meet with them.
  • Before becoming president, Michigan Congressman Gerald Ford called for "a full-blown investigation of these mysterious flying objects" after many UFO sightings in his home state.
  • Jimmy Carter described his 1969 Georgia UFO sighting and said he wasn't sure how much UFO information hadn't been released to the public.
  • Ronald Reagan had two UFO sightings while he was governor of California and later, as president, told the United Nations how an alien invasion would bring the countries of the world together.
  • Bill Clinton attempted to learn more about UFOs and speculated that top secret documents may have been kept from him.

This is just the tip of the iceberg of UFO material that Cameron compiled.

"I'm not trying to prove anything, one way or the other. I'm just trying to show the associations about the presidents and UFOs, and that the presidents are ordinary people like you and I and are interested in the subject."

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  • Hillary Clinton and Laurance Rockefeller

    First lady Hillary Clinton and financier/philanthropist Laurance Rockefeller at his Wyoming ranch in 1995. The book Clinton is carrying is "Are We Alone? Philosophical Implications of the Discovery of Extraterrestrial Life," by astrobiologist Paul Davies.

  • White House Science Advisor Memo To Bill Clinton

    Pictured is an August 1995 memo from Jack Gibbons, director of the White House Office of Science and Technology Policy, to President Clinton re. the president's upcoming meeting with Laurance Rockefeller, who wanted to discuss UFOs, the Roswell UFO crash and declassifying all related information and making it available to the public.

  • Laurance Rockefeller letter to Clinton science advisor Jack Gibbons

    Feb. 5, 1996 letter from Laurance Rockefeller to Clinton science advisor Jack Gibbons. Rockefeller thanked Gibbons for offering to approach the Air Force, CIA and NASA on an initiative to disclose UFO and extraterrestrial evidence to the public, and keeping first lady Hillary Clinton's office informed.

  • N.H. Legislature Rep. Henry McElroy on Eisenhower alien briefing

    This is a video of N.H. State Legislature Representative Henry W. McElroy who testifies on May 7, 2010, about an official briefing document to Dwight Eisenhower, informing the president of a continued presence of extraterrestrial beings in America.

  • Jimmy Carter's UFO Sighting

    Video of President Jimmy Carter describing his 1969 UFO sighting over Leary, Ga. He also says he's not sure how much UFO information was not released to the public.

  • President Reagan U.N. Speech Re. Aliens

    Video of President Ronald Reagan telling the United Nations on Sept. 26, 1988 about how the nations of the world would come together if Earth were threatened by alien invaders.

  • President Clinton on UFOs and Roswell

    Video of Bill Clinton in Hong Kong on Sept. 14, 2005, talking about UFOs, the alleged 1947 Roswell UFO crash and speculating on the possibility that top secret documents and information were kept from him.

  • President Obama Jokes About Roswell UFO

    Video of President Barack Obama on the 2012 campaign trail. He jokes about landing in Roswell, New Mexico.

"If you take a look at Jimmy Carter or President Clinton, those were the two that had this really extreme interest, where there's actually quite a bit of documentation at their libraries that shows that, behind the scenes, they were trying to get stuff and were running up against this brick wall," Cameron told The Huffington Post.

"The Jimmy Carter library, for example, shows all the correspondence between his science advisor at NASA, and his press secretary was going after the FBI. He had a bunch of officials going to various agencies trying to figure out what was going on [re. UFOs], and it looked like he hit a brick wall."

In 2001, armed with the FOIA tool, Cameron recovered 1,000 pages of documents from the Clintons -- at the end of Bill Clinton's presidency -- from the White House Office of Science and Technology Policy.

"Those documents have disappeared, nobody claims to know where these are, but I have all of them," Cameron said. "And when I went to the Clinton library, I recovered another 1,500 pages of UFO documents."

Prior to becoming vice president to George W. Bush in 2001, Dick Cheney had served as a member of the House of Representatives, chief of staff to President Ford and secretary of defense for the elder President Bush. During a radio interview, Cameron asked Cheney if, during any of his government jobs, he had ever been briefed on the subject of UFOs. Cheney's response: "Well, if I had been briefed on that, I'm sure it was probably classified and I couldn't talk about it."

Cameron's FOIA requests led to a rich volume of documents that detail the attempts of financier and philanthropist Laurance S. Rockefeller to get Clinton to disclose information about UFOs and a possible alien presence on Earth in the mid-1990s.

"I've tried to collect every document I could find in every presidential library from Roosevelt on," Cameron said. "[My sites] are places where people can go to find the stories and documents that somebody might want to research about the presidents and UFOs, and people can determine for themselves whether this stuff is real."