I scanned a letter I received from Edwin Thiele in 1978. Because of its poor condition, the resulting file is VERY VERY LARGE. Please accept my apologies.
It's available at:
http://www.filesend.net/download.php?f=786664292e4d3db0fc5ca9d455fe63d8
and wait for 20 seconds for the "Download" button to appear.
Doug