WUH,
You have both my sympathy and my huge respect for your position and what you're doing about it...
It's nothing to compare but I'm in a similar position WRT sorting out my late fathers effects .. I'm not well and no-one in the family is interested in his old uniforms / medals / incredibly detailed & annotated photo albums of his Army life (Para activities in the 50s and 60s) and before that, which are simply mindboggling, Haifa docks in 1948! etc. As you well know, it's trying to find things a good home before I go that's the problem.
Much respect from here Sir,
CS