September 13, 1994: The HIV/AIDS benefit album Red Hot + Country is released. It features Dolly performing a cover of George Jones' "You Gotta Be My Baby". The album peaked at number 30 on the Billboard Top Country Albums chart.
September 13, 2005: Georges Jones released his final studio album, Hits I Missed...And One I Didn't. It includes a duet wth Dolly on the Hank Williams Jr.-penned song "The Blues Man". The album reached number 13 on the Billboard Top Country Albums chart.
September 14, 2004: Dolly’s third live album, Live and Well, is released. It was recorded two years earlier at Dollywood during her Halos & Horns Tour. An accompanying concert DVD was released on the same day. The album peaked at number 22 on the Billboard Top Country Albums chart.
September 14, 2004: Kim McLean released her debut album, Happy Face, which includes a duet with Dolly on "Angels and Eagles".
September 14, 2018: Dolly released a re-recorded version of her 1971 song "Here I Am" as a duet with Sia. The single was the first song released from the Dumplin' soundtrack album. It peaked at number 37 on the Billboard Hot Country Songs chart and is Dolly's most recent top 40 hit on the chart.
September 15, 1975: Dolly released her sixteenth solo studio album, Dolly. It peaked at number 24 on the Billboard Top Country Albums chart.
September 15, 1998: The Nobles' cover of the Everly Brothers song "Sleepless Nights" (with harmony by Dolly) is released as a single from their Slow Glowin' Dream album. It's unclear if this album was ever released (I've never seen a picture of it or even the complete track listing), but the song is available on the radio promo CD Prime Cuts of Bluegrass, Volume 35.
September 15, 2017: "I Believe in You" is released as a single from Dolly's childrens album of the same name. The song had previously been made available as a free download from the Imagination Library website in 2014.
September 15, 2020: "I Saw Mommy Kissing Santa Claus" is released as the second single from Dolly's forty-seventh solo studio album, A Holly Dolly Christmas.
September 16, 1968: Originally released as the B-side of "We'll Get Ahead Someday", "Jeannie's Afraid of the Dark" is released as the third and final single from Porter and Dolly's second collaboration album, Just the Two of Us. The song peaked at number 51 on the Billboard Hot Country Songs chart.
September 16, 1974: Love Is Like a Butterfly, Dolly's fourteenth solo studio album, is released. The album peaked at number seven on the Billboard Top Country Albums chart.
September 16, 1991: "Eagle When She Flies" is released as the third single from Dolly's album of the same name. It peaked at number 33 on the Billboard Hot Country Songs chart.
September 16, 1997: Ladysmith Black Mambazo released their Heavenly album, featuring Dolly on a cover of Bob Dylan's "Knockin' on Heaven’s Door". The album peaked at number 53 on the UK Albums Chart.
September 16, 2016: "Head Over High Heels" is released as the third and final single from Dolly's forty-fifth solo studio album, Pure & Simple.
September 16, 2016: The Country Music Association released the single "Forever Country" in celebration of their 50th anniversary. The song is a mashup of John Denver's "Take Me Home, Country Roads", Willie Nelson's "On the Road Again", and Dolly's "I Will Always Love You". The single is performed by Artists of Then, Now & Forever, which includes Dolly among 29 other artists. The single peaked at number one on the Billboard Hot Country Songs chart.
September 16, 2016: Pentatonix released a cover of "Jolene" featuring Dolly. The single peaked at number 18 on the Billboard Hot Country Songs chart and won a Grammy for Best Country Duo/Group Performance.
September 17, 2021: The compilation album Country Faith Bluegrass is released. It features Dolly performing a new bluegrass rendition of "In the Sweet By and By" with backing vocals by Larry Cordle, Carl Jackson, Jerry Salley, and Bradley Walker.
September 17, 2021: José Feliciano released a cover of "Eagle When She Flies" featuring guest vocals from Dolly. The song is later included on his Behind This Guitar (Deluxe) album.
September 18, 1967: Dolly's debut album, Hello, I'm Dolly, is released. The album peaked at number 11 on the Billboard Top Country Albums chart.
September 18, 2007: Emmylou Harris released the box set Songbird: Rare Tracks & Forgotten Gems. It features five tracks with vocals by Dolly, two of which ("Palms of Victory" and "Softly and Tenderly") are previously unreleased recordings from the abandoned 1970s Trio sessions.
September 18, 2018: The compilation album 27: The Most Perfect Album is released. The album features original songs inspired by all 27 amendments to the US Constitution. Dolly contributed the song for the 19th Amendment (official title "A Woman's Right").