America was shocked when one of the nation’s most celebrated Presidents was gunned down on Nov. 22, 1963, and since then, there has been tons of speculation and conspiracy theories on what happened that dreadful day.

Some of those questions may be put to rest as the John F. Kennedy assassination tapes that have been missing for sometime were recently discovered and put up for sale.

The Associated Press reported the tape is a “long-lost version of the Air Force One recordings made in the immediate aftermath of President John F. Kennedy's assassination, with more than 30 minutes of additional material not in the official version in the government's archives, has been found and is for sale.”

The assassination tapes were revealed weeks after Chris Matthews’ popular book about JFK’s life, “Jack Kennedy: Elusive Hero,” was welcomed with rave reviews and days before the 48th anniversary of the President’s passing.

There is a $500,000 price tag for those willing to buy the reel-to-reel tape. The Raab Collection, a Philadelphia historic documents dealer that bought the tape in a public auction, put the tape up for sale Tuesday.

"As Americans have looked to the history of the Kennedy assassination in search of answers, somewhere in an attic there existed a tape made years before the only known surviving version, of the conversations on Air Force One on that fateful day," said Nathan Raab, vice president of The Raab Collection to the Associated Press,

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The recordings were found in the attic of Chester “Ted” Clifton Jr., who was a senior military aide to President Kennedy. Clifton was in the motorcade when Kennedy was shot.

“I admire General Clifton's heirs for their choice of selling the artifact (the actual tape) for it's value to a Presidential memorabilia collector, while at the same time making the information it contains available to the world,” said J Golden Rockwell on Politico.com.

"That this tape even exists will change the way we view this great event in history," Raab told the AP. "It took decades to analyze the shorter, newer version and it will take years to do the same here.