A pair of Willie Nelson‘s braids will be among the more than 2,000 items going up for auction from the personal collection of Waylon Jennings, reports Rolling Stone.

The auction takes place on October 5 at the Musical Instrument Museum in Jennings’ hometown of Phoenix.

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One of the key items in the auction will be a British-made Ariel Cyclone motorcycle belonging to Buddy Holly. Jennings was the bass player in Holly’s band, the Crickets, and was due to travel on the 1959 flight that killed Holly, the Big Bopper and Ritchie Valens.

Other items in the collection include a handwritten letter to Jennings from John Lennon, a robe and boxing gloves owned by Muhammad Ali, a pair of Hank Williams’ Nudie cowboy boots, and Nelson’s braids – presented to Jennings at a sobriety party in his honor given by Johnny Cash and his wife June Carter Cash in 1983.

Also up for auction will be Jennings’ handwritten lyrics and personal messages.

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The event will help bring attention to the care provided at Phoenix Children’s Hospital in Arizona.