I have just compared all tracks of this time's official bootleg "L.A. Friday" with well known audience recordings "The Lost Millard Masters"(VGP-340, Disc5&6) and found these playings are completely same exclude some cuts between songs.
So, all tracks are definitely from July 13th, unless the audience recordings long believed date was wrong.
FYI, 'Fingerprint File' in
Forum:
Tell Me