Petty's uncle, Earl Jernigan, owned a local film-developing business and worked on location shoots whenever filmmakers came to the area (Uncle Earl's proof included one item that had already gained young Tom's fascination: the rubber suit worn by the creature in "Return of the Creature from the Black Lagoon," which had been shot in Silver Springs).
So when Jernigan's wife, Tom's Aunt Evelyn, rolled into the driveway and asked her nephew if he'd like to "go and see Elvis Presley," he was licking his chops at what would in a few hours become the adventure of his young life.
After driving 30 miles, Aunt Evelyn and Tommy, along with his brother Bruce and cousins Sadie and Norma Darnell, pulled up near the film set in downtown Ocala - where Elvis was to shoot a scene of him driving up in a car and entering a bank. "There was a huge crowd; the biggest crowd I've ever seen in the streets of Ocala," Tom said in "Conversations."
"And then I swear to God, a line of white Cadillacs pulled in. All white. I'd never seen anything like that. And I was standing up on a box to see over everyone's head, because a big roar started up when the cars pulled in."
Guys in mohair suits and pompadours began bounding out of each car - to Tom's startled cry of "Is that ELVIS?" every time.
While Presley's impact would later be carved into two halves, often referred to affectionately as "Young Elvis" or "Skinny Elvis" for his '50s persona, and "Fat Elvis" for his later days in the '70s, the character who appeared before Tom Petty in 1961 was firmly entrenched in an "Elvis No Man's Land" between the two.
Presley had long ago stormed the charts with "Hound Dog" and "Love Me Tender." But this was the era that saw the rise of "Elvis movies," celluloid affairs that ranged from the critically acclaimed ("Jailhouse Rock") to pure star vehicles ("Clambake," "Spin Out" and others) in which the Pelvis usually saved the day and got the girl (played variously by everyone from Ann-Margret and Nancy Sinatra to Mary Tyler Moore).
So when the real Elvis finally appeared, Tom knew. Immediately.
"He stepped out radiant as an angel," Tom said. "He seemed to glow and walk above the ground. It was like nothing I'd ever seen in my life. At 50 yards, we were stunned by what this guy looked like. And he came walking right towards us."
Elvis' hair was so impossibly black that it glistened a deep blue when the sunlight hit it. And that's when Elvis walked directly over to Uncle Earl, Aunt Evelyn and little Tom Petty.
"We were speechless," Tom said. As Uncle Earl introduced Elvis to his nieces and nephews, The King of Rock 'n' Roll smiled and nodded to each open-mouthed youngster.
"I don't know what he said, because I was just too dumbfounded," Tom said. "And he went into his trailer."
Then, young Tom got "really excited" as hundreds of girls pressed against the chain-link fence. Many brandished album covers and photos, which one of Elvis' "Memphis mafia guys," as Tom described it, dutifully took into the trailer and returned, bearing authentic Elvis autographs.
Seeing the girls go wild over Elvis only added to the lasting impression on Tommy, his cousin Sadie said. "My sister and I were excited to watch them film a movie. But Tommy got caught up in the moment. It was like he was mesmerized with an imprint on his brain."
Tom and his cousins hung out the rest of the day and watched as the crew spent hours filming that one scene of Elvis getting out of the car and entering the bank. And every time Elvis' car rolled up, the crowd went "insane," breaking through the barricades and charging toward the star.
"And I thought at the time, 'That is one hell of a job to have. That's a great gig - being Elvis Presley,'" Tom said.
Young Tom began collecting anything he could find on Elvis. He ordered "The Elvis Presley Handbook" - which he had to send $1 for, all the way to England. And he stayed inside the house - constantly - and did nothing but listen to Elvis music. "My dad was concerned that I didn't go outside, that I just played these records all day."
Tom Petty's fascination with music began with Elvis Presley in Ocala. And though he never saw Elvis again, the flames from that fire have never waned.
"I learned all of those early Elvis songs," Tom said. "And having that kind of background in rock 'n' roll, of where it had come from, has served me to this day."
"It became an invaluable thing to have. So for that, I thank him."