June 20
1901 - Belize, British Honduras to London, EnglandA registered letter with two directives: "
Via New Orleans" then "
Via New York".
The address is High Road / Milburn / London NW.

The stamps on the letter were issued (2-cents postage & postage) in 1891 and (5-cents postage & revenue) in 1899. They are respectively numbers 32 & 44 in the Stamp World online catalogue.
and1922 - Georgetown, Grand Cayman to Matanzas, Cuba
Postage was paid using a postal stationery envelope with a 2½ penny floral indicium.
I checked out Hugo Ziegler in google only to find one reference in a 1923 Cuban philatelic pamphlet stating that he was a subscriber.
I also wondered about the route the letter may have taken getting to its destination. Pure speculation on my part but below the map shows a guess.

1. Georgetown, Cayman Islands to Kingston, Jamaica by sea
2. Kingston. Jamaica to Havana, Cuba by sea
3. Havana to Matanzas overland.
I will watch for a registered letter from that period to see what the routing really was back then.
and finally1959 - St. Pierre & Miquelon to Toronto, Canada
Hotel Robert answers a client's inquiry as the tourist season warms up. The hotel built in the 1920's famously had Al Capone as a guest. The hotel still exists today.
The 20-franc stamp was issued in 1947. (SW.C # 366)
The pair of 3-franc stamps issued in 1955 shows a refrigeration plant. (SW.C #377)