This article discusses the apostille procedure and the full legalization procedure for documents issued in Maryland. Are you looking for an example of a Maryland Apostille?We can apostille an authorization letter signed and notarized in all 50 U.S. states, District of Columbia, and the U.S. Federal Government (USA Embassy). Maryland Apostille Process. For Private Documents originating in Maryland. 1. Take the notarized document to the Licensing Office of the Clerk of the Montgomery County Circuit Court, 1st Floor, 50. How do I have documents certified? Authorization Letter. Travel Consent Letter. Instructions (4 simple steps): Step 1: Choose from Basic, Plus, or Premier.