Ok, the book didn't come it's lost and I got my credit back.  Do I order it again?  It's not a wishlist book, but will it reorder itself?  I want the book, just not multiple copies!

Well you can check your "books I've requested" tab and see if its there.  I don't know it it automatically reorders a non-WL book, but if it did, it would show up there.

From the Help Center:

The requestor will get credit back, and the book will go onto the Wish List (if there are no available copies in the system) or the Reminder List (if there are other copies available to request).  If the book was a Wish List book when it was requested before, the requestor will go back to #1 in line for the book.

• However, this does not mean that the book is definitely lost.  Sometimes it is merely delayed en route.
• If the book arrives after it has been declared Lost, the requestor must mark it received from the Transaction Archive.

Since it may be a delay in delivery, I wouldn't re-order it right away, but give it a bit of additional time, perhaps an extra week or so to arrive.  Also, you should check if there is Delivery Confirmation; the Sender may be able to have USPS try to track the book down if they file a claim to find the book. 

I usually wait at least a couple of weeks before re-ordering a book that's gone lost, especially if the book is coming from far away like Alaska, Hawaii. You could also PM the sender and politely ask if it was actually mailed when they marked it mailed. Just let them know you don't really mind if they mailed it late, but you would like to know before you order another copy of the book.

Cheryl

I'm pretty sure the Help Center recommends waiting 2 weeks before re-requesting the book.  If the first copy arrives and it was mailed before the date it went lost, you will need to mark it received from your Transaction Archive.  Even if you have another copy coming. 

If the postmark clearly shows it was not mailed before the date it was declared lost and the sender did not PM you to let you know that, you don't have to mark it received.

After I've been notified by PBS that a book I sent has gone lost, I immediately PM the requester to basically let them know I did send the book, and say I'm sorry it went lost and that I hope it will show up.  I had a book I sent go lost  once and it was only going from KS to OK (about 250-300 miles) and it took 6 weeks, but it got there.  Sometimes they do eventually get to their destination.  (Most of the time not though).  Pat

I'm just going to let it molder in my reminder list for now.  I did pm the sender and have yet to receive a reply.  Thank you all for your thoughtful replies.