I have been stymied by a similar problem with 150 years of photos.

It would be very nice if the professional librarian, who is almost an original founding member of mudcatter would check in and offer advice.

I am sure Mr. Lighter might also be able to offer insight ... catalogueing can bury, confuse or expedite.

It is a "tree" structure...but the "philum, genus, specius" should connect to a universal structure for access.

Sincerely,
Gargoyle

the LOC is amazing and it would be nice to format for rapid inclusion.