Track of the Grey Wolf

By Gentile, Gary
1989, Avon Books
ISBN 0380756854

Descripton: Chronological account of U-boat warfare off US shores, 1942 month-by month, then 1943-1945. Appendices on Allied shipping, U-boat successes, sinkings of merchant vessels and U-boats. Indexed. Interesting to read, perhaps a little melodramatic in retelling survivor accounts from statements given to the US navy, but a good read overall.