Costly Expensive but a must have. I'm not quite sure why the book costs so much. It may be because it's so old. The information is pretty good. They describe just about every Liberty ever built. There are stats, dates, times, places and everything. Some operational history as well. I would have been happier with a hardcover and more photos. Better photos would help one understand the complex changes made to some ships of the class. The book does not include current status on the 2 preserved ships-Brown and O'Brien since it was written while they were still non operational.