The black hole in the Atlantic
The war begins: Portugal offers succor, 1930-1940
The view from Washington, January-May, 1941
The United States goes to war, May-December, 1941
The U-boats' happy war, 1942
The Trident Conference, January-July, 1943
Churchill lowers the boom, June-September, 1943
The British arrive, September-October, 1943
Sailing orders, November-December, 1943
Almost war with Portugal, January-March, 1944
Negotiating Santa Maria, April-July, 1944
Pan Am goes to Santa Maria, August-December, 1944
Allied victory and beyond, 1945.
Operation Alacrity : the Azores and the war in the Atlantic by Norman Herz. ISBN 1591143640. Published by Naval Institute in 2003. Publication and catalogue information, links to buy online and reader comments.