Multiple 'Photos Library.photoslibrary' files
In checking up my files I see that I have multiple Photos Library.photoslibrary files in my Pictures file in the Finder. Four to be exact. The original (un-numbered) is the largest at323GB, while 2, 3, and 4 have about 4GB each.
OS Mojave; iMac 27, 2019
Is there a way to consolidate them into one? How can I determine if the newer, numbered files contain unique image files rather than duplicates?
Thanks in advance!
Ed in Brooklyn (locked down!)
iMac Line (2012 and Later)