United States Apostilles is a private agency located in downtown Los Angeles, California. We are the leading services provider in the entire US. Providing a highly needed service in Apostilles & Authentications services for our clients around the world, specializing in all 50 US States. Best Solutions: Customers requiring authentication of any school records (e.g., transcript or diploma) must obtain a notarized copy of the record from the high school, university, etc., before submitting the documents for authentication. Any document... read full review »