The following Schweich Lecture on Biblical Archaeology is now available on-line in PDF: Stephen H. Langdon [1876-1937], Babylonian Menologies and the Semitic Calendars. The Schweich Lectures of the British Academy 1933. London: Oxford University Press, 1935. Hbk. pp.169. Click here to read. Currently there are currently 22 of these lectures in the Public Domain. See here for the full list.