From the Earl Warren Showgrounds website:
The Earl Warren Showgrounds were originally developed as the permanent location for the Santa Barbara National Horse and Flower show as well to attract and support other equestrian and agricultural events to the Santa Barbara area. In 1950, a site at the corner of Las Positas Road and Calle Real was selected for the showground. The state of California, using funds provided by the horse show association, purchased 136.5 acres of land at the site. To gain support for construction of the facilities from the city of Santa Barbara and the local community, the district gave eighty-two acres to the city to add to the community golf course and ten acres for the construction of Adams Elementary School.
In 1955 the 19th Agricultural District received state authorization to plan and build the only fairgrounds in California specifically designed for horse and flower shows. The Equestrian Facility was completed in 1958, with the Exhibit building in 1959 and the administration building was added in 1961.
I first became acquainted with Earl Warren's (as it became popularly known) in the mid-Sixties when I attended a custom car show in the same exhibit hall later used for concerts. Jim Salzer, a local record store owner and musician, became the main promoter of shows in both Santa Barbara and Ventura County, getting his start at the Starlight Ballroom in Oxnard, presenting such groups as the Count Five, Captain Beefheart and Martha and the Vandellas.
What follows is a very preliminary listing of shows at Earl Warren's; feedback, corrections and comments are solicited. (All shows listed took place in the Exhibit Hall, unless denoted otherwise)
Chronology:
December 17, 1962: The Beach Boys*
??/??/64: T.A.M.I. Show (Jan & Dean, Leslie Gore)*
August 4, 1964: The Beach Boys, Eddie Hodges, Lynn Easton, The Kingsmen*
June 3, 1966: Lovin' Spoonful, The Leaves++
June 11, 1966: Love, Neil Diamond++
(Attendance - 765)
June 18, 1966: The Surfaris, Thee Midnighters++
(Attendance - 965)
June 25, 1966: 3 bands (?)++
(Attendance - 560)
July, 2, 1966: The Beach Boys*
July 22, 1966: Captain Beefheart++
(Attendance - 410)
July 28, 1966: Them, Count Five, The Doors*
(Attendance - 945)
August 6, 1966: The Seeds, The Doors (Flower Building)*
(Attendance - 598)
August 13, 1966: Young Rascals++
(Attendance - 1258)
August 27, 1966 - Yardbirds*
(Attendance - 1820)
September 10, 1966: The Turtles, X- Trippers (?), SSA(?)*++
(Attendance - 898)
September 17, 1966: The Standells, X-Trippers (?), Sixpence, ESP++
(Attendance- 895)
October 29, 1966: Mothers of Invention, The Factory
(Attendance - 1052)
December 31, 1966 (?): The Leaves. What's Left*
February 3, 1967: Buffalo Springfield, ESP, The Seeds, B.J. Thomas and the Triumphs
(Attendance - 1615)
February 11, 1967: Jefferson Airplane+
March 4, 1967: Love, Sons of Adam, Jackie Lee, The Renegades
(Attendance - 2714)
March 11, 1967: Sopwith Camel, The Grassroots, The Knack+
(Attendance - 586)
March 18, 1967: Eric Burdon and the Animals, Hourglass*+
(Attendance - 2714)
March 25, 1967: Blues Magoos, The Knack, ESP+
(Attendance - 878)
May 13, 1967: The Seeds, Yellow Payges, Captain Speed+
(Attendance - 2265)
April 15, 1967: The Byrds, Alexander's Timeless Bloozband, Dumplings, ESP
(Attendance - 3175)
April 29, 1967: Grateful Dead, The Doors, UFO, Captain Speed
Grateful Dead played two sets, before and after the Doors.
(Attendance - 2419)
May 27, 1967: The Doors, Country Joe and the Fish, Andrew Staples, Captain Speed
(Attendance - 2803)
June 10, 1967: Jefferson Airplane, Heads & Tails, Captain Speed
(Attendance - 3750)
June 24, 1967: Canned Heat, Chambers Brothers*
(Attendance - 675)
July 1, 1967: Jimi Hendrix Experience, Country Joe and the Fish, Strawberry Alarm Clock, Captain Speed
(Attendance - 1908)
August 5, 1967: The Doors, Lavender Hill Mob, Joint Effort
(Attendance - 3436)
August 19, 1967: Jimi Hendrix Experience, Moby Grape, Tim Buckley, Captain Speed
(Attendance - 2729)
September 16, 1967(?): The Seeds, The Midnighters, Chocolate Watchband, West Coast Pop Art Experimental Band*
(Attendance - 1890)
September 30, 1967: Quicksilver Messenger Service, Clear Light, The Van Morrison Group, Blue Cheer
(Attendance - 1247)
October 7, 1967: Jefferson Airplane, The Hour Glass, Spirit
November 4, 1967: Buffalo Springfield, Watts 103rd Street Band, Lewis and Clark Expedition
November 25, 1967: Canned Heat, Youngbloods, Merry Go Round, Clear Light
December 7, 1967: Buffalo Springfield, Charlie Musselwhite, Three Dog Night, Sields
January 6, 1968: Buffalo Springfield, Charles Lloyd, Turquoise
(Buffalo Springfield was paid $2500, Charles Lloyd received $1,000, and Turquoise got $150) (Attendance - 3249)
January 20, 1968: Vanilla Fudge, Alexander's Timeless Blooz Band, The Stone Poneys, Taj Mahal
(Vanilla Fudge - $2500, Alexander's - $200, Stone Pony's - $1500, Taj Mahal may not have played) (Attendance - 1344)
February 3, 1968: Big Brother and the Holding Company, Electric Flag, Sweetwater
(Big Brother - $2500, Electric Flag - 1500, Sweetwater - 266?) (Attendance - 1855)
February 11, 1968: Eric Burdon and the Animals, The Fugs, Eire Apparent
(Eric Burdon and Eire Apparent - $3,000 total, The Fugs - $1500) (Attendance - 1907)
February 24, 1968: Cream, James Cotton Blues Band, Taj Mahal
(Cream - $3,000, James Cotton - $1,000, Taj Mahal - $400) (Attendance - 3601)
March 16, 1968: Blue Cheer, The Nitty Gritty Dirt Band, The Nazz ( changed name to Alice Cooper after posters were printed)
(Blue Cheer - $1500, Nitty Gritty - $750, Alice Cooper - 200) (Attendance - 1641)
March 25, 1968(?): Blues Magoos, The Knack, ESP*
April 6, 1968: Electric Flag, Traffic, Steppenwolf
(Electric Flag - $2000, Traffic - $1500, Steppenwolf - $750) (Attendance - 1669)
August 29, 1968: The Who (in Arena)*
May 10, 1968: Yardbirds, Dave, Dee Dozy, Beaky, Mich, Tich (?) Three Dog Night and Turquoise
(Yardbirds - $3,000; Dave, Dee Dozy, et.al. may have been a no-show but were scheduled to receive $750, 3 Dog Night - $300, Turquoise - $150)
September 2, 1968: Paul Butterfield Blues Band, Sunshine Company, Peanut Butter Conspiracy, Alexander's Timeless Blooz Band
(Attendance - 2840)
March 1, 1969: Iron Butterfly, Santana Blues Band, Blues Image (in Arena)*
June 6, 1969: Jefferson Airplane, Steve Miller Blues Band, Pulse (power is cut before the end of show, Airplane drummer continues on for a few minutes, then ends show) (in Arena)
August 1, 1969: Led Zeppelin, Jethro Tull, The Fraternity of Man (in Arena)
August 16, 1969: Blind Faith, Delaney and Bonnie and Friends, Free, Zephyr (Salzer speaks to audience before Blind Faith intro with regard to crowd breaking in to venue; this is the last show he promotes)(in Arena)
September 6, 1969: Poco, Three Dog Night, Savoy Brown
December 22, 1974: The Beach Boys*