October 9 is World Post Day , celebrating the 1874 creation of the first postal union . It 's available from Swiss company Scheidegger and Spiess . Swiss businessman Adolf Feller began collecting postcards in the late 19th century . He used them to advertise his wares and services as well as for advertising purposes.
October 9 is World Post Day , celebrating the 1874 creation of the first postal union . Swiss businessman Adolf Feller began collecting postcards in the late 19th century . He used them to advertise his wares and services as well as for advertising purposes.