- 19th and 20th Century Correspondence
- Animal Postcards
- Antarctica, now and then
- Apple Lovers
- Ashgabat and Turkmenistan
- Azerbaijan- آذربايجان
- Belarus
- Birds on Postcards
- Bookmarks
- Boring Postcards
- CARPETS of the World
- Dioramas
- Early Advertising (pre 1920)
- Estonia
- Factories
- Finland, Finland, Finland
- Grand Canyon
- Historic Seattle
- Hotel Postcards & Ephemera
- I Love Postcards!
- Idaho
- Idaho Falls
- Kazakhstan
- Kyrgyzstan, Central Asia
- Library Postcards
- Lietuva | Lithuania
- Made in Soviet Union
- Made in Sweden
- Maps on postcards
- Mid-century Packaging (1940-1970)
- Mountains on Postcards
- Multiviews postcards
- Observatories
- Old Maps
- Olympia, WA
- People on Postcards
- Postcard Collection
- Postcards from Lithuania
- QSL Cards
- Rocks on Postcards
- Seattle
- Spokane!
- Sweden before 1950
- Tacoma
- Tucson, Arizona
- Vintage Advertising
- Vintage Animals
- Vintage Arizona
- Vintage Bookmarks
- Vintage Greeting Cards
- Vintage Holiday Greetings Postcards
- Vintage Illustration
- Vintage Matchbooks and Matchboxes
- Vintage Pittsburgh
- Vintage Postcards
- Vintage Propaganda
- Vintage Real Photo Postcard (RPPC)
- Vintage Russia
- Vintage Tacoma
- Volcanic National Parks and Monuments
- Water Postcards
- Weird postcards
- Yugoslavia Photos/Memories