Thank you "K", why couldn't someone just say that !
I have another query, as a brand new mac user.
I used your link (http://osxdaily.com/2011/08/30/where-iphoto-pictures-are-located/) which allowed me to find photos. I noticed when importing into Libre Office via "Insert" command, that the file inserted was the original file that I imported into iphoto, not the file I had edited, even though I thought I had deleted the original. (I am using Photoshop Elements to edit).
The only way I found to get around this was to drag the photos I wished to use in the document onto the Desktop and import/insert from there. It works, but a bit long winded. Now I'm sure that this is because I don't yet fully understand what I am doing on my brand new shiny mac, but I am trying ! This may now be altering this thread (not intentional) as until I read your link didn't even know where the photos were!!!