Florida Atlantic University released former professor James Tracy's personnel file on Monday.
Tracy, an FAU Communications professor, was fired in January.
His termination came after years of controversy involving his personal blog where he questioned whether the children and adults killed in the Sandy Hook massacre were actually actors.
In the newly released documents, there are various letters from people around the country urging the university to fire Dr. Tracy.
There is also a letter from the interim dean in 2013 to Dr. Tracy where it is noted that parents had their children's applications withdrawn from the school because of the controversy.
It also says at least one donor withdrew support.
And the letter discusses a "perceived level of threat."
According to the letter from back in 2013, students and faculty felt their safety was compromised and the university as a whole needed to consider undergoing a threat assessment to protect Dr. Tracy and everyone on the Boca Campus.
A spokesman with FAU said on Monday that the campus Police Department assessed the threats.
Dr. Tracy did not want to comment for this story and said he has an attorney.
He was fired in January for not filling out forms explaining his activities outside the university.