You'd have to upload the photos as a document. /u/macroblue has the best solution. Make a PDF book.
There are many tools out there that can help you with this, a google search led me to this website: http://www.convert-jpg-to-pdf.net/ though, I can't vouch for it.
Once you've made the PDF book send it to your kindle email like any other document. I've seen power point presentations presented on tablets this way, it works quite well.
Looking at these comment they make it really hard if you have the image in JPG (if not convert it here it converts over 120 image formats to JPG) then all you need to do is go to this website turn it into PDF and then go to this website and turn it into anything you want Word, Excel, PowerPoint.
I have done this in past works perfectly and they are all free.
You can convert those Cheat sheet JPGs to PDF here:
http://www.convert-jpg-to-pdf.net/
Set the conversion page for landscape and image size to scale to the page. The border is up to you depending on whether you are using 3 hole paper or putting them in a notebook. The site will put all the images in one PDF but you may need to sort the order prior to converting.
Sign up for drop box it is free. You can go to an online site like http://www.convert-jpg-to-pdf.net/ just select the pics you want to turn into pdf .. done in under a min or two.. then up load them to your free dropbox account.. BTW the dropbox account is good for all kinds of things.. if you want to load doc @ home and the access it anywhere ect ect... then post it to the wiki/thread pretty sure you can without a mods approval but if not ask the on where the sub is going for approval... Then done... a lot of people would really like the storm eagle and fire raptor instructions so go for it please.. Forgot to mention the 45 mins I stood @ my scanner......LMAO.....