As I said before, I am not even searching them, but each time I saw a friendly fire event I copy it there.
Find of the day, the Spitfire IX PL137 of 341 (French) Sqn RAF shot down on 9 July 1944 by a P-47 "of 353rd FG coming to his help in an air battle" according to link below:
http://francecrashes39-45.net/page_fiche_av.php?id=5829