PIO Schiwitz and the Irex History Book

I've included this letter from Lt. Schiwitz, written in December 1959, because it might of of help in further research of the Irex history. The letter accompanied some photographs in the possession of Captain Gallemore, and so I assume that the letter is a cover letter used to send them.

The “PIO” I assume is Public Information Officer. The photographs for the most part were taken when Captain Gallemore assumed command of the Irex some years before. What is interesting is Lt. Schiwitz' reference to his “Irex History Book” I don't know if this is a personal project or an official publication, but in either case it would be nice to get our hands on it. Anyone have any idea?