This visual line-up can be related to the TEB chronology post in this archive at http://ghettoraga.blogspot.com/2010/02/after-attempt-to-make-complete-list-of.html
The Giant Sun Trolley (June 1966-Spring 1967)
The Hydrogen Jukebox #1 (Spring-Summer 1967)
Glen Sweeney (drums), Clive Kingsley (electric guitar), Paul Minns (oboe), Brian Meredith (electric cello)
Brian Meredith and Glen Sweeney on stage in 1967 (courtesy B. Meredith)
The band recorded three tracks sold and realised by Music Standard Library and one track for "Alchemy" album, never published ("Raga in D").
The National Balkan Ensemble a.k.a. TEB: (L-R) Minns, Cartland, Sweeney & Coff.
The Third Ear Band #3 (December 1968?)
Glen Sweeney (hand Drums), Richard Coff (violin), Paul Minns (oboe)
For a short period the band became just a trio (with Carolyn as a muse). No recordings and few concerts, just a photo session with photographer Ray Stevenson at the Kensall Green cemetery of London.
Third Ear Band #4 (December 1968-? Spring 1969)
This line-up played just few live concerts, among these the famous Hyde Park free one.
(L-R): Minns, Buckmaster, Sweeney and Coff at the Roundhouse (London) May 30th, 1969
The Third Ear Band #6 (Summer 1969-July 1970)
The Third Ear ('Big') Band (or Electric Earband) #7 (September 1970-July 1971)
The same line-up, with congas player Gasper Lawal as guest musician (see below), on September 1970 played two set live in the studio in Bremen (Germany) for the TV programme "Beat Club". A DVD from it was realised in 2011 by English Gonzo Multimedia (read at http://ghettoraga.blogspot.com/2011/11/lost-broadcasts-dvd-review.html ).
The Third Ear ('Big') Band #8 (January 1971)
A return of Coff on violin just to record on air a "John Peel's Sunday Show" session broadcast on January 17th, 1971 (read at http://ghettoraga.blogspot.com/2009/12/rarities-of-national-balkan-ensemble.html).
The Third Ear Band #9 (July 1971-February 1972)
Glen Sweeney (drums), Paul Minns (oboe), Simon House (violin), Mike Marchant (electric guitar), Peter Pavli (electric bass)
Despite some rehearsals, this band never played live.
The Third Ear Band #12 (December 1972-January 1973)
Glen Sweeney (drums), Paul Minns (oboe), Mike Marchant (electric guitar & vocals), Morgan Fisher (VCS3)
According to Fisher (2009), this line-up (probably with a bass player in) played just "two radio shows and one gig" in North London....
The Third Ear Band #13 (January 1973)
Glen Sweeney (drums), Paul Minns (oboe), Mike Marchant (electric guitar & vocals), Simon House (electric violin, VCS3)
With this line-up, TEB played at least a concert at the "Arts Theatre" of Cambridge on January 23th, 1973 (as documented by a poster).
Glen Sweeney (drums), Paul Minns (oboe), Mick Carter (electric guitar), Terry Haxton (bass and keyboards), Gary Heath (synthetiser)
Some weeks of rehearsals but never played live.
Glen Sweeney (drums), Paul Minns (oboe), Mick Carter (guitar), Marcus Beale (violin), Brian Diprose (bass)
Rehearsals but very few live concerts (among these, on June 4th, at "Roundhouse Downstairs Theatre" of London).
This line-up recorded a pop album titled "Apocaliptic Anthems". It would be published just in 1991 by Italian Materiali Sonori as "Prophecies" . According Brian Diprose the band was actually a new line-up of the Third Ear Band. Only in 1991 Glen Sweeney and Mick Carter decided to publish the record as Hydrogen Jukebox...
From the Sarzana gig the limited edition cassette "New Forecasts from the Third Ear Almanac" (ADN Records 1989).
Between March and May the band recorded a new, never published album, titled "Spirits" (or "Magic").
(Elektrik) Third Ear Band #22 (March-August 1991)
The last TEB line-up ever. Recorded "Brain Waves" for MaSo (published on 1993) and played few concerts in England and Italy (Rome, Bergamo, Naples, Mantova).