On the morning of 9 January, about to go mail a book, I checked my account and saw another book requested. So I printed out the address and mailed it.

Today, checking my transaction archive, idly curious as to how many books I have shipped in last 30 days, I see at the top of the archive a red checked one. Seems that the same book I saw requested on the morning of 9 January, is listed as having been requested at 8:58 PM 8 January and cancelled (no reason shown) at 9:00 PM. 8 January.

1. I do not understand how, if the request was cancelled 9 PM, 8 January, I ever saw it, for the first time, as a book requested from me and therefore needing my attention the next morning, 9 January.

And I wonder where I stand with PBS since this book, which I mailed in good faith 9 January (practically patting myself on the back for promptly honoring request, I was) gets to the requestor today or tomorrow.

It was probably a different transaction.  A request cannot be cancelled by the requestor once the address is accessed.  If the name is the same then it's possible that they ordered it, changed their mind, cancelled it and then changed their mind again and reordered.  I've gone into my transaction archive and noticed book requests that were cancelled that I never saw.  One time the same heavily posted book was there 3 times in a row from different requestors on like the same day.

If it's still in your Books I Mailed Tab then it's fine.  If it isn't and the sysem cancelled it after you printed the label, you need to contact PBS.

You can click on the details links in your Transaction Archive and your My Account page and see the exact times that the book was ordered, canceled and reordered. You should see that the active request on your My Account page came in after the cancellation, which you never saw. If the first request was less than one hour old when it was canceled, then it was in the buyer's remorse period and you wouldn't even have gotten an email about it.

As long as you mailed a book with an active transaction and marked it mailed so it is still on your main My Account page, you have no worries.

Thanks all. It looks like Cathy nailed it.

As I first noted, the request was made the evening of 8 January and cancelled two minutes later. An inspection of the request I responded to shows it was made three more minutes later. That would explain the two tings I could not figure out; First, why I was not informed by e-mail that the requestor had cancelled it, and second; why it was still there for me to see as an active request the next morning.

Mary had it right, too. You ladies are sharp. Mille grazie.