Sharpen a Blurry Photograph

It can be difficult enough to read the writing in some parish records but it is made worse when the image is blurry. I noticed many LDS images of Buffalo area churches were blurry. Is there technology to sharpen such images and make them more readable?

I am not endorsing them, but a quick search turned up Remini Web | Photo Enhancer. I uploaded a blurry image from St. Stephen's Church in Middleport, NY and let the enhancer work its magic. I was impressed at how much more readable the page was. I suppose there are other such services but I was excited to share my initial success story about this particular service.