Dandelion was run by disc jockey John Peel and Clive Selwood.  It was founded in 1969 as an outlet for material by people whose music Peel liked, people who had been unable to get a recording contract elsewhere; its roster of artists therefore reflected his eclectic tastes, and ranged from singer-songwriter Bridget St. John to proto-Punk group Stack Waddy, by way of Avant-garde-Jazz-man Lol Coxhill.  It didn't sell many records at the time - its sole Singles Chart success came with Medicine Head's, 'Pictures In The Sky' (DAN-7003 / K-19002 ; 1971) - but over the years it has become a popular label with collectors.  Dandelion changed labels and distributors several times during the three years of its existence.  It started off with CBS and a dark red label, and its singles shared a catalogue sequence with those of the other CBS group companies.  A simplified white label followed, in 1970; according to Clive Selwood these white-label copies were for promotional purposes only, but while some have 'Promotion not for sale' and the release date on them others do not.  Be that as it may, the numbering was still shared with CBS's singles.   A third label, featuring on one side a picture of Peel's hamster, 'Dandelion', in the midst of a collection of flowers, appeared c.1971,when the Kinney corporation took over as distributors.  At this point company's singles were given their own numerical series, DAN-7000; though at least one, the Medicine Head record referred to above, was also numbered in the K-19000s.  Some copies of this single appeared with a white label; there is nothing on it to suggest that these were promotional copies, so perhaps the record's success caused a shortage of the usual hamster-and-flowers labels and the white ones - which were usually reserved for promos, with the appropriate overprinting - were used as a stop-gap.  The arrangement with Kinney was very short-lived, and a move to Polydor followed, in 1972.  The move saw another change of label design, to one with a dandelion plant on it; the catalogue numbers were changed also, Dandelion singles sharing a 2001-000 series with those of Polydor.  The CBS-era sleeve seems to have been used by several CBS-distributed labels, Thanks to Robert Lyons for the info.

71 Various Artists Dandelion Label Sampler DANDELION DS 7001
71 Siren Strange Locomotion DANDELION DAN 7002
71 Medicine Head Pictures In The Sky DANDELION DAN 7003
71 Yamasukis Yamasukis DANDELION DAN 7004
71 Not Traced DANDELION K 19001
71 Medicine Head Pictures In The Sky DANDELION K 19002
71 Yamasukis Yamasukis DANDELION K 19003
72 Coxhill Bedford Duo Pretty Little Girl DANDELION 2001 253
72 Medicine Head Kum On DANDELION 2001 276
72 St John Briget Fly High DANDELION 2001 280
72 Tractor Stoney Glory DANDELION 2001 282
72 Medicine Head Only To Do What Is True DANDELION 2001 325
72 Yamasukis Carrie DANDELION 2001 327
72 Stackwaddy You Really Got Me DANDELION 2001 331
72 Coyne Kevin Cheat Me DANDELION 2001 357
72 St John Briget Nice DANDELION 2001 361
72 Supersisters No Tree Will Grow DANDELION 2001 379
72 Ward Clifford T Coathanger DANDELION 2001 382
72 Medicine Head How Does It Feel DANDELION 2001 383
72 Will Dandy & Dandylettes Sonny Boy DANDELION 2058 214
72 Medicine Head One And One Is One  DANDELION 2058 432