Some of my favorite record company vintage T shirt artwork can be found on T shirts from George Harrison's Dark Horse record label, which was first distributed by A & M Records. These T shirts had George Harrison's Dark Horse logo on the front and an interesting logo on the back.
The inspiration for the Dark Horse logo came from a label on a tin box Harrison saw on one of his many trips to India.
Harrison had recorded for the Parlophone and Apple labels under a contract terminated in 1976. All his subsequent recordings were released through Dark Horse. This started with Thirty Three & 1/3 in 1976 and ending with the posthumous release of Brainwashed in 2002. Harrison's Dark Horse back catalogue was remastered and reissued in a box-set during 2004. These, and releases of other artists, have been distributed in turn by three record companies:
A&M Records (1974-1976)
Warner Bros. Records (1976-1992)
Parlophone (starting 2002)
The logo features the seven-headed horse Uchchaisravas, a common figure in Indian art and mythology. Harrison was the proverbial dark horse in going for a solo career after having been overshadowed among The Beatles by Lennon and McCartney, despite his creating several of the band's more popular later songs (such as "Here Comes the Sun" and "Something"), and being the first ex-Beatle with a number-one ranked solo album (All Things Must Pass in 1970).
I am fortunate enough to have four of these vintage rock T shirts and am happy to show them to you.