Barth (Karl and Markus) http://hdl.handle.net/11258/33156 2026-04-30T07:21:10Z 10 Letter of Thanks http://hdl.handle.net/11258/31945 10 Letter of Thanks TCO to Markus Barth 1965-01-15T00:00:00Z 05 Request with Details on Arrangement http://hdl.handle.net/11258/31940 05 Request with Details on Arrangement TCO to Arthur Cochrane 1964-02-24T00:00:00Z 07 Letter of Thanks and Invitation http://hdl.handle.net/11258/31942 07 Letter of Thanks and Invitation TCO to Arthur Cochrane 1964-06-12T00:00:00Z 08 Request for Help with Dissertation http://hdl.handle.net/11258/31943 08 Request for Help with Dissertation TCO to Markus Barth 1964-06-16T00:00:00Z