"Jerry Garcia, January 17, 1972-January 29, 1972"
Here is the Codebook as PDF.
There's no particular reason I am showing this slice, just wanted to give you all a look at how some of the cancellations fit in, and how I have my data visualizations currently configured.
Since we're here, though, we can see the Hooteroll? tour contemporaneous with canceled Dead and Jerry gigs. Which is the chicken and which the egg, which the cause and which the effect, I leave to your speculation.