Another photo with the discs...this one by Ian Stewart taken during the "a Degree of Murder" sessions with Brian Jones (could be Feb 11th, 67 according this Rolling Stones database).

U of Albany Student Press (Feb 21, 75 - review of the Friday, Feb 14th show in NYC?, Sep 18, 79 and Sep 23, 80),

Review of the March 28, 68 show at the Aerodrome (from the University of Albany Student Press):

For the Apr 23, 77 show, the Georgia Tech Technique had this photo:

Green River College Current, July 1977

Deborah this one's for you... New (forgotten) date for the Yardbirds, Winona State University, Winona, Minnesota April 18, 1968 ( I haven't seen this date or these photos anywhere). The review is interesting. Many people walked which probably added to Keith and Jim's disatisfaction.

...

Chicago Tribune, Feb 7th, 69

This website has a well-documented account of the Yardbirds' trip to Singapore and Australia, so if the quote below is correct, then the last date for a performance in North America would have been January 8th. So the date range for the mystery photo would be Dec 26th - Jan 8th.

Could very well be a postcard, or a poster... I have no idea where it's from, I grabbed a screenshot at some point long ago.

Substantiation for the Dec 27th show (I don't think this one was in doubt):

Ticket stub for the Jan 2nd show...don't know if it's legit, but I did see someone elsewhere saying they were at the show. As you say, finding proof so many years after the fact isn't easy, so take it for what it is...Other bands playing that night were the Syndicate of Sound and ? & the Mysterians according to this site.

Actually the ad is for the 7th (published on the 6th) but thanks Deb, glad you're enjoying this. An update on the last photo I posted above...it's from March 15th, 67 in Offenbach Germany and is actually a still from a tv performance on Beat Beat Beat. https://www.youtube.com/watch?v=LhfdWjaRIFw

Review of Indianapolis show on Jan 25, 75 from Indiana State U, The Shield, Feb 7, 75

I don't have anything definitive for the shows on the 26th, 29th and the 2nd, but the ads below for the 1st and 7th are definitive, and there is ample evidence for the 28th. I suspect that the Denmark tour was postponed to April. The last photo below is very interesting. It's from Chaville, April 30th, 67. The reflectors are gone...but it's hard to tell whether it's been painted yet.

Re the mystery Yardbirds photo, here's a possible timeline: Dec 4, Lima, Ohio - last known photo of the Tele without the reflectors Dec 10 - 15th - shows in the UK - likely stayed until Christmas, and maybe it was during this break that he put the reflectors on Dec 26 - Jan 7th - shows in the US (maybe as late as Jan 15th - they possibly flew to Singapore via San Francisco or LA) Jan 16th - July 1st - shows in Singapore, Australia, NZ, and Europe April 15th Denmark - last known photo of the guitar with the reflectors May and June - back in the UK - Page paints the Tele with the dragon motif sometime during this period July 22nd - First photo of the painted Telecaster If the photo is assumed to have been taken in North America, then it could only have been taken between Dec 26th and Jan 15th. Dec 26 - Rochester NY War Memorial Dec 27 - Ann Arbor, Fifth Dimension, MI Dec 28 - Peoria, IL Dec 29 - Kingston, ON...they arrived after the show ended Dec 30-31 - no known shows Jan 1 - Johnstown, Pennsylvania (Cambria Arena) Jan 2 - Commack, NY Jan 3-6 - no known shows Jan 7 - Lowell, MA Jan 8-15 - no known shows So either 1) there was a show the Hunt Armory during one of the gaps (maybe just before the Johnstown show, which is a little more than an hour from Pittsburgh), or 2) the photo was taken at one of the venues listed above (maybe Johnstown, but again the photo doesn't look like it was taken at an arena) or 3) the photo was taken at another venue during one of the gap dates. The photo doesn't look like it was taken at the Hunt Armory...but there may have been a temporary ceiling at the time. My guess is that since they were in the Pittsburgh area on the 1st, that the photo was taken on Dec 30th or 31st.

Apparently the reflectors/disks were a thing in the UK...I got this from a website that discusses Syd Barrett's Esquire (it wasn't a Telecaster):

Excellent...the first one below is from April 15th, 67. For July 22nd, 67 I have a different photo and Page is dressed differently. It may not be accurate. The third photo is supposedly from the Australian tour - late Jan 67. I have no info on the last photo.

Roughly between Jan 15th and July 67 they were out of the US (Australia, NZ and Europe)...so that leaves the first two weeks of Jan 67. The only reason I can think of that they would play another Pittsburgh show so soon after the Civic Centre is if it was for a College or University.

This photo is supposedly from Dec 28th in Peoria, Illinois. Note the Tele has the reflectors...but is missing the one at the top of the guitar (could just be the angle too...)

Date must be after early December 1966, if this photo is from Dec 4th, 66 in Lima, OH, since there are no reflectors on the Tele...