It bothers me somewhat, as others have noted below, that the main 2662-page text of the Third New International is unchanged from the 1961 original, but the bulk of formal American English has remained surprisingly constant since that time. I had been relying upon an old Seventh New Collegiate by Merriam-Webster until now, and had come to appreciate their particular brand; "the genuine article", as it were. When I uncrated this book, I realized that it had to have a place of easy access where it could stay opened all the time, for it is so large. I ended up needing to clear a whole shelf, and I installed its own overhead fluorescent lamp. It gets a lot of everyday use, and if I don't find the word, I know I should think twice before continuing to use it in my speech and writings. I only wish the Addendum were integrated with the main portion. I, too, will be interested in their Fourth edition.