Danielle and Jessica very kindly made offers in the comments of a place to stay, each with a cat (which sounds just the thing to relieve the stress of a roadshow). I realised later that I had taken my e-mail address off pp so was not easily contactable; if you would still be willing to put me up for a few nights it would be wonderful.
Both New Directions and n+1 have been coming up with new things to do, so it seems I should try to be in New York for a slightly longer time than originally expected. One reader has generously offered a place for September 8-12, another for (roughly) October 3-7; meanwhile New Directions has said it would help if I could come back to NYC for the 29th of September, n+1 will be having some kind of event on 26th October and New Directions will be having its 75th Birthday Gala at Cooper Union on the 27th. I think I will be going up to Boston for the 18th of October (and maybe a day or so either side), but otherwise I am hoping to rely on the kindness of strangers.
A reader has also come to my rescue and offered to sublet my apartment, which is, on the one hand, great, but means, on the other hand, that I have been doing the things one does to get an apartment ready for occupancy by someone other than oneself. (So, er, had no idea that a whole week had gone by since commenters kindly offered a place to stay in New York.)