Merging multiple iPhoto Libraries
I currently have 2 iPhoto back ups stored on an external hard drive from my old iMac. I also have another iPhoto album on my current iMac. I would like to merge ALL of the iPhoto albums into one album on a new eternal hard drive (while keeping the original albums on their current devices) so that I can look through the entire photo collection at once but without clogging up my current iMac. Could someone please tell me if this is possible and if so how do I go about doing it? :)
iMac 21.5″, OS X 10.11