Bulk Upload Tiles to a Folder?

I have some artwork purchased outside of Roll20.  Some are art packs with 200+ tiles in them. Is there a way I can create a folder and upload everything to that folder?  I'd like to organize each art pack into a separate folder. The only thing I've been able to find to do is to create a folder, upload all 200 tiles, then go to Recent Uploads and tediously...click...each...one...and drag them into the folder.  So painful.

You can do slightly better by using Folder View . It allows you to do multiple selections. 

Unfortunately, not at all better.  There's no way to: - select images other than clicking...on...each...one... - I can open Recent Uploads but there's no way to "clear out" that list.  I don't want to delete the files, I just want to say "set recent uploads to today only" or something, but instead it goes back for months.  If I could "clear out" that view and then see only things I uploaded in the most recent batch, that would be helpful because then I could Select All.

There's a filter button to the right of the Recent Uploads header. It hides things that have been filed.