Is there a reprint option? I never used Snap Ship.
In the future, any time you print a document like a label or documents created for the moment, change your printer to a virtual PDF printer that creates a permanent file on your computer. Name the file with an appropriate name and then print the file. I would then clean up the files once a week and rename with a x on front of the file name and keep as long as I want. I would then delete them every few months.
I actually have my default printer set to virtual PDF printer so I never forget and change to my regular printer when I need it.