Question on Ancestry.com?? How to store a photos of a Census in one file?

I have a question for any of you that have ancestry.com

I had found a census of 1783 of our town with all of the surrounding ranchos which is around 30 pages. So if I download all of those pages. How can I create a file in ancestry.com in my account where I can store that whole census of 30 pages (photos) into one file?