They are published by Max Kunzli and Alfred Mainzer.
The ones I have were printed in Switzerland.
Busy cats in class rooms, moving day, getting mail or riding a trolley.
These are offered on eBay at this time. Take a look if interested.
Vintage paper can whisper in our ear. Giving us a glimpse of a time before now. I want to share some of my collection of vintage post cards here. To see other vintage paper items you can visit my other blog.