I would recommend that you download the PDF files rather than the Jpegs files. The pdf files are much better quality. It will be a bit of a pain in the ass to download all of the files as you have to do each one, one at a time (there are hundreds of pages of information), but at least you can easily assembly all of the pdfs into one file for easier viewing. if you have the Adobe software.
Also, there are many other IRS that are also on this site, so you can spread the word to others who went to other IRS and Indian Day Schools as well.
I hope that you will find this information useful.