Chicago Convention and Travaux Preparatoires

There are no travaux preps as such for the Chicago Convention. It's a case of ploughing through the proceedings of the 1944 Conference at this link according to ICAO. And of course all the documents are helpfully in DjVu...!

http://www.icao.int/cgi/goto_m.pl?/icaonet/arch/chicago/conf_proceed.html