If you still have the pictures of the OW, check to see if the pictures have a "taken on" date. If you hold your mouse over a picture in the folder for a few seconds without opening it, a box should appear that has information about the picture, including "Date Picture Taken".
Most digital cameras these days automatically save that information to make cataloging easier.
I know it's not much, but you may be able to find out if the pictures were taken recently.
