George Harrison used the Maestro Fuzz-Tone pedal during the recording sessions for the first two Beatles albums, including "With the Beatles." This information is detailed in the PMT Online article, "The Beatles Effects Pedals Guide."

According to This article from Dolphin Music, "One of the first fuzzboxes invented was the Maestro Fuzztone, and the Beatles have used it. It can be seen on some photographs that seem to be dated from the 1963-1964 days."

At 2:14 minute mark, Maestro Fuzz Tone can be seen in Corgan's stompland.

In this article, Richards says, “It was down to one little foot pedal, the Gibson [owners of the Maestro brand] fuzz tone [sic]… I’ve only ever used foot pedals twice [the other being an XR delay on Some Girls]… effects are not my thing. I just go for quality of sound… “I was imagining horns, trying to imitate their sound to put on the track later when we recorded. I’d already heard the riff in my head, the way Otis Redding did it later, thinking this is gonna be the horn line. But we didn’t have any horns, and I was only going to lay down a dub. The fuzz tone came in handy so I could give a shape to what the horns were supposed to do. But the fuzz tone had never been heard before anywhere, and that’s the sound that caught everybody’s imagination.”

Billy Gibbons talks about the Maestro Fuzz-Tone as one his first pedals, citing it as a pivotal starting point, in this video starting at 5:00.

According to an article on Guitar Lobby titled "Ritchie Blackmore Guitars & Gear (2022 Update)," Ritchie Blackmore used the Maestro Fuzz-Tone during the 1960s.

In an interview published on MusicRadar (http://www.musicradar.com/news/guitars/interview-robby-krieger-on-the-doors-la-woman-jim-morrison-and-skrillex-527068), Robby says: "...I had a Maestro Fuzztone, which I used..."

In an interview with Guitar World in 2008, Krieger talks about how this pedal was used on "Waiting for the Sun".

It might have just been a Gibson Maestro fuzztone, or it might have bee n these Acoustic amps we had with a built-in fuzz. Actually, I think it was a combination of those things. But there definitely was some heavy fuzz on that stuff—maybe too heavy.

Stompbox: 100 Pedals of the World’s Greatest Guitarists specifies it to be an FZ-1, as can be seen in this teaser image.

"Squire, who felt that certain effects were better matched with neck or bridge pickups, rewired his Rickenbacker with stereo outputs in the early ’70s. Onstage, he used a boatload of vintage effects, including Maestro Fuzz-Tone, TC Electronic Stereo Chorus Flanger, TC Nova Reverb, Boss OC-3 Super Octave, Mu-Tron III, and custom-made tremolo pedals. He played Moog Taurus bass pedals, eventually triggering samples from an E-Mu ESI2000 sampler."

At 5:06 of the video, producer Ludwig Göransson explains that he uses the Maestro Fuzz-Tone on the guitar track of "Redbone."

Christian Bland's pedalboard live at Lollapalooza 2012

Well, back in the day, I had one of the first Fuzz-Tones. It must have been ’65 or ’66. That was the Maestro, and I was kind of underwhelmed with it. I thought it was a nice sound effect, but it didn’t really light a fire under me. I found I got a better sound by turning the amp up all the way. That natural harmonic tube distortion—that’s the sound I wanted.

In the Tumblr post "Gear'n'things from Asbury Park — Steve Van Zandt’s Gear," it's noted that Steven Van Zandt has mentioned using the Maestro Fuzz-Tone in interviews. While he hasn't incorporated it into any Bruce Springsteen setups, the Fuzz-Tone, originally manufactured in the 1960s, may have been used by Van Zandt in the 1970s or he might employ a modern pedal that replicates its iconic sound.