Roy Mark Ramdas of Rutherford, N.J., presented Canseco with a binder full of two decades worth of newspaper clippings.
"I have been a fan for 19 years. He is in the only honest person in baseball and maybe the world. I believe him 100 percent about everything. After all A-Rod isn't even denying anything," he said.
The most vivid of New York's colorful characters that turned out was perhaps Joanne Maiorca, who claimed to know Canseco, though he clearly didn't recognize her.
"The only thing you left out of the book was us having group sex arranged by the Gambino crime family," she told Canseco.
"I have no idea what you're talking about," a perplexed Canseco replied.
It was not the oddball fans that surprised Canseco, but the number of people who still doubted the veracity of his claims.
"I'm truly amazed that people don't believe what I'm saying. The transcript of the polygraph I took is in the book and people still don't want to believe it," he said.
"I'm doing everything to clean up this sport. I'm happy to do what I can to help. People are already saying the next commissioner of baseball is going to be Jose Canseco."