In 1955 the Strasburg Lutheran, Oscar Cullmann, gave these Lectures at Harvard. These had already been published in Switzerland, but the English language version is on the web at http://www.religion-online.org/showbook.asp?title=1115. A while ago I made a quicky PB of it, but after proofing it with a copy in a local library - adding greek, page numbers, and footnotes, I offer it to you.
I have tried to add links to Barth's dogmatics, which Cullmann cites in the German original, but not all of the links work for me. It seems as if the German pagination of the datatype is not marked every page in the Logos edition of Barth, and so some page references work, and others do not.
In one place it cites Debrunner, and I have linked it with BDF - the later English translation of this...
