If your paper is fragile, you may want to consider taking a digital photo instead. Definitely don't put it through a sheet-fed scanner, but even a flatbed scanner may try to flatten it in a way that damages the paper.
I find using a rectangle magnifying glass with one of those "fish eyes" in the corner the best thing to use. When you use a digital image you get distortion everytime you magnify it. Sometimes the old ways are the best ways.
I use my digital camera to make several photos from different angles, and lighting. Then I transfer to computer, and print on the best quality glossy photo paper. The digital and glossy will bring out hidden details we cannot see. Good luck