If its about a detail of a particular card I will answer as soon as I can but that might not be straight away. This should also provide you with the Publishers details.
Postcard SWITZERLAND UDB railway CF de Leysin No Buyers fee PA26
SWITZERLAND Postcard UDB Luzern Gütschbahn Hotel Gütsch PA55
SWITZERLAND Postcard UDB Rigi Bahn Schnurtobelbrücke posted Annecy PA54
Postcard UDB SWITZERLAND Vitznau Rigi Bahn 1899 Schnurtobelbrücke No fee PA32
Postcard UDB RP Chicago St Paul Minneapolis & Omaha Alco 326 No Buyers fee TR040
Postcard UDB RP Atchison Topeka & Santa Fe Mallet 3000 No Buyers fee TR039
