I picked up couple of these during my recent visit to India. I didn't know there were 16 of these. JazakAllah for informing. I will be on the look out for the other volumes.
A large number of Articles of Ala Hazrat have been compiled and printed into 16 books, for ease of reading, by Raza Academy of Mumbai: the books are called Rasaael e Razaviyyah. Given below are the front covers of the books, showing the titles of the articles;-
