Others...

All the covers and cancellations which were not "covered" at the set of countries or organisations should be found in this section, including (but not limited to) first flight covers, helicopter flights, congresses, companies, exhibitions, special happenings, etc.

You will already find a list of covers which I have already identified. I still have to scan the covers and upload them one by one per theme here. Of course, this section will take time to be put in place. Additionally I will try to find as many as possible documentation about what happened during that day/period and its relation with Expo 58.

In the mean time, I am starting with the first sets hereafter.