On Sat, 29 Dec 2018 10:42:05 +1100, Peter Jason wrote:

Thanks for all replies. I was presented with a box of random loose
color slides at Xmas dinner, all from the 1950s - 1970s, most
without numbers or markings, all dark but still in good
condition. All require extensive PShopping. I'll take the
suggestion to group like images in separate folders. (Win10
emulated the scanner to WinXP3rd upgrade.)

Tag 'em mate. Quick to do even for a thousand images. As a result
you at least will have viewed the images and been able to assess
their usefulness to yourself. Lots of applications for tagging, pity
Win Live Photogallery now unsupported, personally I use the Adobe
application for arranging and viewing and tagging.