Hi James,
I would agree with everything Dave said. Bibliotheca Titanicana is a bibliographer's list of books about the disaster. it was printed in two forms, both are very hard to find. one was the limited edition you mentioned. it was also printed in the January, 1926 issue of The Americana Collector magazine.
the article lists the various 1912 instant disaster books, plus the major publications done by both the American and British inquiries, as well as the major titles like Beesley, Gracey, Bullock, and Young, and even some of the scarcer works, like Hester Julian's book and Moncada's.
as Dave said, Chapin also wrote a short account of the disaster from his perspective as a passenger on the
Carpathia. it is even more scarce than the bibliography - it was first printed in a magazine in 1912, and reprinted, with some additions, in another magazine in 1913.
in book form, it was printed only once, and was limited to 20 copies! which makes it the smallest print run of any Titanic book ever published far as I know.
here is the link to Chapin's books on my site:
http://titanicbooksite.com/author%20pages/chapinhoward.html
all the best, Michael (TheManInBlack) T