(Cross-posted in Off-Topic)

I've been working on a little project for the last hour and I seem to have hit an obstacle. I scanned a bunch of 8.5x11" pages onto my computer and have cropped them so that the text will line up. However, I thought that I would be able to just go into MS Paint and fuse them all one right next to the other, but it seems that's not possible because the files are so big? I can't even get two of them to appear in a Paint doc at one time. Is there anyway that I can do this? In the end, I want a very long .jpg that I can just scroll across in a Picture Viewing program.

Thanks in advance to any that can offer assistance.