The biography also highlights a 1981 incident, described as his attempt "to place the treasonous Federal Reserve Board of Governors under legal, nonviolent, citizens arrest."
Archive media reports from the time of the incident and von Brunn's trial say he armed himself with a revolver, sawed-off shotgun and a hunting knife before he entered the Federal Reserve Board's headquarters.
The incident was reportedly an attempt to focus media attention on the nation's economic woes and high interest rates set by the Fed.
Potok said it's "remarkable that there is a subculture in this country, of literally thousands and thousands of people who believe things like the Federal Reserve Board is really an entity secretly controlled for the benefit of Jewish bankers, etc., etc., etc."
A jury convicted von Brunn on a litany of charges, from attempted kidnapping to assault and possession of a prohibited weapon.
On the site, he claims he was "tried in a Washington, D.C., Superior Court; convicted by a Negro jury, Jew/Negro attorneys, and sentenced to prison for 11 years by a Jew judge." According to Bureau of Prisons records, von Brunn left prison in September 1989.
The criminal complaint said Missouri native von Brunn has for the past two years rented a room in the Annapolis, Md. apartment his son shares with his fiance.
Johns had worked at the museum for six years, and has been, along with the other security staff, praised as a hero by museum, law enforcement and political officials.
At today's news conference, museum chief of staff Bill Parsons thanked Johns and all of the other guards for protecting the public. "We owe a great debt to them," he said.
"Stephen opened that door for the elderly man coming in. He was caring about him," Parsons said, "And he was shot."
"He was a loving father… and he was also my hero," Johns' 14-year-old son, Stephen Jr., said late Wednesday.
The museum remains closed today, and is flying its flags at half-mast in memory of Johns.
ABC News' Ariane de Vogue, Luis Martinez, Tom Giusto and Polson Kanneth contributed to this report.