Here's a chronological list of State Fair Grandstand performers since 1970.
www.desmoinesregister.com
State fair lineup since 1970, for reference, in case anyone hits DMR paywall for link.
1970: Johnny Cash with June Carter, Carter Family, Statler Brothers, Engelbert Humperdinck, Carl Perkins, Tennessee Three, Porter Wagoner, Dolly Parton, Red Skelton, Lawrence Welk, Faron Young.
1971: The Jackson Five, Glen Campbell, Lucha Villa, the Carpenters, “Hee Haw” with Buck Owens, Charley Pride.
1972: Sonny and Cher, Bill Cosby, Paul Anka, Conway Twitty, Blackwood Family Reunion, The Guess Who, Bob Hope.
1973: Elton John, Pat Boone, Tammy Wynette, Osmond Brothers, Seals and Crofts.
1974: Loggins & Messina, Herb Alpert and the Tijuana Brass, Chicago, Roy Clark, Country All-Stars with Tanya Tucker and more, Charlie Rich, Redd Foxx, Harry "Sweet" Edison and the Little Steps, Liza Minnelli.
1975: Mac Davis Show, Beach Boys, The Osmonds, Chicago, The Helen Reddy Show, Tanya Tucker Show with Ronnie Milsap, Billie "Crash" Craddock, Olivia Newton-John.
1976: Johnny Cash, Bachman-Turner Overdrive, Frankie Valli, Neil Sedaka, Isaac Hayes, Roy Clark, Lawrence Welk, Freddie Fender, Bobby Vinton.
1977: Dolly Parton, Merle Haggard, the Beach Boys (with Brian Wilson), Kansas, Captain and Tennille, Pat Boone Family, Bay City Rollers, Henry Mancini and Florence Henderson.
1978: Heart, Styx, Statler Brothers, Dennis Day, Anne Murray, Jim Nabors, The Osmonds.
1979: Willie Nelson, Chic, the Beach Boys, the Statler Brothers and Barbara Mandrell, Jerry Reed and Eddie Rabbitt, Red Skelton and Bugs Bunny Summer Fair Follies.
1980: Rock 'N' Roll Reunion I (Bobby Vee, the Association, etc.), Kenny Rogers, Waylon Jennings, Anne Murray, the Marshall Tucker Band, Bob Hope.
1981: Little River Band/the Dirt Band, Rock ‘N’ Roll Reunion II (Bobby Vee, Del Shannon, Freddie Cannon, the Drifters, the Crystals, Lou Christie), Mickey Gilley, Barbara Mandrell, Mac Davis, John Schneider, Pat Benatar with David Johansen.
1982: Joan Jett and the Blackhearts, Dolly Parton, Oak Ridge Boys, Alabama, Rock ‘N’ Roll Reunion III, Statler Brothers, Air Supply.
1983: Jefferson Starship, Alabama, Rock ‘N’ Roll Reunion IV, Ronnie Milsap with Juice Newton, Tennessee Ernie Ford, Wayne Newton, the Oak Ridge Boys.
1984: Rod Stewart, the Everly Brothers, Quiet Riot, Alabama, Gospel Music Celebration, Rock ‘N’ Roll Reunion V, Country Music Hall of Fame, Wayne Newton, Donnie and Marie Osmond.
1985: The Beach Boys, Rock ‘N’ Roll Reunion VI, the Statler Brothers, George Thorogood and the Delaware Destroyers with Johnny Winter, Tom Jones, Dave Dudley as part of the Country Music Hall of Fame show, the Oak Ridge Boys, Alabama.
1986: George Strait, John Denver, the Beach Boys, Julio Iglesias, Alabama, The Oak Ridge Boys with Nitty Gritty Dirt Band, the Statler Brothers, Starship with the Outfield, Rock 'N' Roll Reunion VII.
1987: Gregg Allman Band and Stevie Ray Vaughan with Double Trouble, George Strait, Miami Sound Machine with Gloria Estefan and the Jets, Rock ‘N’ Roll Reunion VIII, Crystal Gayle and Gary Morris, Alabama, Chicago.
1988: Lisa Lisa, Rock 'N' Roll Reunion IX, Statler Brothers, Alabama, the Smothers Brothers, the Beach Boys, the Oak Ridge Boys with Nitty Gritty Dirt Band, Randy Travis and the Judds.
1989: Wayne Newton, Reba McEntire with Ricky Van Shelton, Rock ‘N’ Roll Reunion X, Barbara Mandrell, Conway Twitty, Tiffany and New Kids on the Block, 30th Anniversary of Rock 'N' Roll (Tiny Tim, Chuck Negron, Herman's Hermits, etc.), George Strait with Kathy Mattea, and Hank Williams Jr.
1990: Bob Dylan, Willie Nelson, Garth Brooks (replaced Ricky Van Shelton), George Strait with Alan Jackson, the Judds, Rock ‘N’ Roll Reunion XI, Alabama with Clint Black, Tommy Page, Kenny G with Michael Bolton.
1991: Garth Brooks with Trisha Yearwood, George Strait, Reba McEntire, Cheap Trick, Nelson, Alabama, Hank Williams Jr. with Little Feat, Rock ‘N’ Roll Reunion XII (Frankie Valli and the Four Seasons), Alan Jackson with Pam Tillis and Aaron Tippin.
1992: Ringo Starr and his All-Starr Band, Tanya Tucker and Travis Tritt, Rock ‘N’ Roll Reunion XIII with The Everly Brothers, Statler Brothers with Lee Greenwood, Ricky Van Shelton, Color Me Badd, Randy Travis with Brooks & Dunn, Clint Black with Aaron Tippin.
1993: George Strait, Rock ‘N’ Roll Reunion XIV, Vince Gill, Michael Bolton, Brooks & Dunn, Garth Brooks, Clint Black, Barry Manilow, Chris LeDoux.
1994: Steve Miller Band, Reba McEntire, Alan Jackson, George Strait with Clay Walker, Travis Tritt with Lee Roy Parnell, Kenny G, Brooks & Dunn with Faith Hill, Rock ‘N’ Roll Reunion XV, Carman, Kenny G.
1995: Rock ‘N’ Roll Reunion XVI (Chuck Berry, Frankie Valli and the Four Seasons, etc.), Brooks & Dunn, Alan Jackson with Faith Hill, Petra and White Heart, Vince Gill with Shelby Lynne, George Strait, John Michael Montgomery with Nitty Gritty Dirt Band, Lorrie Morgan with the Tractors.
1996: Rock ‘N’ Roll Reunion XVII with Jerry Lee Lewis and Johnny Rivers, Hank Williams Jr. with Leon Russell and the Marshall Tucker Band, Travis Tritt and Marty Stuart, Gin Blossoms and Goo Goo Dolls, Tim McGraw with Faith Hill, Alan Jackson, George Strait, Michael Bolton, Lynyrd Skynyrd with Bad Company.
1997: John Michael Montgomery, Rock ‘N’ Roll Reunion XVIII with Little Richard, Tim McGraw with Martina McBride, Vince Gill, 4Him, Clay Walker, The Wallflowers, The Rightous Brothers, ZZ Top.
1998: Alabama, LeAnn Rimes, Rock ‘N’ Roll Reunion XIX (Chubby Checker), Clint Black, Sandi Patty, Wynonna, Rock Never Stops (Warrant, Quiet Riot, etc.), Alan Jackson, Sister Hazel and Seven Mary Three.
1999: Def Leppard, Reba McEntire, Rock ‘N’ Roll Reunion XX (Little Richard), Tim McGraw, the Moody Blues, Goo Goo Dolls and Sugar Ray with Fastball, Brooks & Dunn.
2000: Christina Aguilera, Brooks & Dunn with Lonestar, Rock ‘N’ Roll Reunion XXI, Clay Walker, REO Speedwagon and Styx, Sawyer Brown, Clint Black, Def Leppard.
2001: Bob Dylan, Billy Ray Cyrus and Aaron Tippin, Blood, Sweat & Tears, Oak Ridge Boys, Chris LeDoux, 98 Degrees, Sawyer Brown with Montgomery Gentry, Rock 'n' Roll Reunion XXII.
2002: Alicia Keys, Kenny Chesney, Journey, Toby Keith, REO Speedwagon and Styx, Sara Evans, Trick Pony, Brooks & Dunn.
2003: Kenny Chesney, Crosby, Stills & Nash, Rock ‘N’ Roll Reunion XXIV, Uncle Kracker with Everclear, Goo Goo Dolls with Lisa Marie Presley, Chris LeDoux, Montgomery Gentry, Boston, Alan Jackson.
2004: Michael W. Smith, Montgomery Gentry, Rock ‘N’ Roll Reunion XXV, Clay Aiken, Rascal Flatts, Nickelback with Puddle of Mudd and Finger 11, Josh Turner, Kid Rock with Saliva, Brooks & Dunn.
2005: ZZ Top, Keith Urban, "A Prairie Home Companion," Brad Paisley, Switchfoot, Hoobastank, Big & Rich, Rock 'N' Roll Reunion XXVI.
2006: Brad Paisley with Eric Church, James Taylor, Montgomery Gentry with Miranda Lambert, Trace Adkins, George Jones, Smash Mouth, Big & Rich, Rock 'N' Roll Reunion XXVII.
2007: Gary Allan, Alice Cooper with Blue Oyster Cult, Carrie Underwood with American Idols Live!, Rock 'N' Roll Reunion XXVIII, Joe Walsh, Corbin Bleu, Dierks Bentley, Switchfoot with Cartel, Casting Crowns.
2008: Michael W. Smith, Josh Turner with Craig Morgan, Rick Springfield with Patty Smyth and Scandal, Foreigner, Volunteer Jam with Charlie Daniels Band, .38 Special and Shooter Jennings, Vanessa Hudgens, Tracey Lawrence with Blake Shelton, Def Leppard with Everclear, Garrison Keillor.
2009: Steven Curtis Chapman, Gary Allen with Chuck Wicks, Peter Frampton and Gin Blossoms, Big & Rich, Brett Michaels and Jackyl, Shinedown and Rev Theory, Brooks & Dunn, Kelly Clarkson, Journey with Heart.
2010: Sheryl Crow with Colbie Callait, Keith Urban, Shinedown with Chevelle, Pat Benatar with REO Speedwagon, Darius Rucker, Boys Like Girls, Sugarland with Little Big Town, MercyMe with the Newsboys.
2011: Janet Jackson, Reba, Train and Maroon 5, Ronnie Dunn, Doobie Brothers with Kansas, Def Leppard with Heart, Jason Aldean, Casting Crowns.
2012: TobyMac, the “Happy Together” tour (the Turtles, etc.), Larry The Cable Guy, Miranda Lambert, the Band Perry, Big Time Rush, Hank Williams Jr., Journey with Pat Benatar and Loverboy, Rascal Flatts with Little Big Town and Eli Young Band.
2013: Casting Crowns with Jeremy Camp, the “Happy Together” tour (the Turtles, etc.), Dana Carvey, Dierks Bentley with Justin Moore, Victoria Justice with Pentatonix, Toby Keith, Train, Carly Rae Jepsen, Alan Jackson.
2014: Newsboys, the “Happy Together” tour, Goo Goo Dolls with Daughtry, Florida Georgia Line, Jake Owen, Chevelle with Halestorm, Lady Antebellum, Foreigner with Styx.
2015: Casting Crowns, Justin Moore, Tulsa and Styx with Def Leppard, Reba McEntire, Carrie Underwood, Yes and Toto, Charlie Puth and Dee Snider.
2016: Kiss, Steven Tyler, Heart with Joan Jett and the Blackhearts and Cheap Trick, Meghan Trainor, Dierks Bentley, Newsboys, Brett Eldredge, Jason Derulo, Lady Antebellum.
2017: For King and Country, Nickelback, "I Love The '90s" featuring Salt-n-Peppa, Pentatonix, Paramore, Flo Rida, Alabama, Little Big Town, John Mellencamp, Kid Rock.
2018: Casting Crowns, Reba McEntire, Daughtry, Old Dominion, Papa Roach and Chevelle, Jim Gaffigan, Thomas Rhett, Earth, Wind & Fire, Sugarland, Peter Cetera and Florida Georgia Line.
2019: For King & Country, The Chainsmokers, Slipknot, Zac Brown Band, Toby Keith, Dan + Shay, Gabriel "Fluffy" Iglesias, Foreigner, Luke Bryan, Pentatonix, Hootie & the Blowfish.