These days, you’ll find Andrew Davidhazy at home with his two dogs, but the retired RIT professor was once part of a national investigation. 

In 1978, the U.S. government approached three photography professors at RIT and asked them to help in the investigation into the assassination of John F. Kennedy. 

"Our work, a major part had to do with authenticating if the negatives came from Oswald’s camera," said Davidhazy. 

Controversy surrounded a picture of Lee Harvey Oswald. His wife claimed she took the photo of Oswald in their backyard holding the rifle believed used to kill JFK.

Oswald said the pictures were fake and were altered to frame him. 

"He said his head having been copied onto the other pictures. That there was a line going through here and that the grain pattern on the film was not consistent," Davidhazy explained 

Using the original picture, the negatives and the camera used by Oswald’s wife, Davidhazy and his colleagues worked to prove the picture's authenticity, all under the supervision of Secret Service agents. 

"If we went to the darkroom to make a print or something, they would come along with us," said Davidhazy. "They looked at the evidence that it was not be transferred someplace or another."

The group looked at everything from the way the camera lens flared to the shadows on Oswald’s face. 

“I took a mannequin, put it under similar lighting conditions and moved it around. That would change the shadow," said Davidhazy. 

After two weeks and multiple test methods, Davidhazy and his team found no evidence of altering on the picture, proving it did come from Oswald’s wife's camera.

“We debunked every claim of fakery that people made," said Davidhazy about their findings. 

The team presented the findings in a report before Congress. Many Americans still believe some conspiracy theory about what happened on Nov. 22, 1963. 

Davidhazy is surprised people still talk about it 60 years later. 

"The government and 'Big Brother' doing all these things. All that to say well there's nothing here, this is real," Davidhazy said. 

However he remains optimistic the evidence will speak for itself.