Buying multiple photos

Odd question, but an affirmative answer would be oh so helpful: Is there a way to have the number of a photo (say 15/143 from the gallery) visible when the thumbnails are used to buy multiple photos? My elderly mother has given me a long list of photos (near 50) she would like me to purchase for her from a recent shoot I did at a friend's anniversary celebration, but she's listed them all by their number. Can I as an owner of the gallery make those numbers visible to me when I go to put them in a cart via the "buy multiple photos" route? Thanks in advance!