On January 15 1967 Simon & Garfunkel were booked by The University of Detroit in the Towns and Gowns Series. But as mentioned in a note in the (student)newspaper The Michigan Daily, a day later:

The concert was cancelled and money paid for a ticket would be refunded.

But now I found a an article by Jas Obrecht, a music journalist, who writes full enthousiasm about the concert, on his Substack page. The concert given on January 15th at the Memorial Building.

Now, I am a bit confused now. was it held or cancelled. And even more: as in October of the same year, October 7th, Simon & Garfunkel were booked again and in the review it is mentioned that the show in February was cancelled because the duo was snowed in.

Someone?