loge mentioned the 'old friend' lumen - it had me wondering too!
yes, I thought of that too, loge - but I opted for the head positions in the end...probably makes more sense the other way, though (but the same count, of course).
Yes, but anniversaries going from newspaper publication dates (the Yale college mag kicked it off a couple of years earlier, hence the 'ambiguity' I think).
I think that’s the point, and was going by the dates given in Wikipedia. Unless I have missed something, I fear this may be another of those open-ended final stages.
I don't think there can be any doubt about the numbers, loge - due to the 'resolution' there can only be two numbers - and, because the two grids are bespoke (if you know what I mean) it's not really necessary to identify the subject as specifically as I first thought (so yes - above the 5 letter words is surely right).