ACS has a portable scanner that’s available for Vassar faculty members to borrow. It’s ideal for bringing to an archive to scan documents (if allowed) for later study. While it’s true that you can save an image of a document page with your phone/camera, a scan will give you a much more consistent and high-quality result.
Most scanners are too bulky and heavy to consider traveling with, but not this one. The Canon Canoscan LiDE 700F is essentially the size of a laptop computer. It’s less than 2 inches high, with a footprint of 11.5 x 16 inches. It weighs only 4.6 pounds. It can scan a letter-size document (8.5″ x 11″) with a resolution of up to 4800×4800 dpi. It fits snugly in a 12″ x 17″ 2.5″ padded carrying case.
Contact your ACS liaison if you’re interested in borrowing it.