Photo-Mount Web Site
- Information regarding Photo-Mount postcards.
- http://www.north-trek.com/photomounts/PhotoMounts.html

Ephemera: postcards
- Exploring the world of old paper.
- http://ephemera.typepad.com/ephemera/postcards/index.html

Postcardy Weblog
- Showcasing a collection of postcards with photos and a history behing the card.
- http://postcardy.blogspot.com/

A Postcard Collection of Mount Holyoke College
- Donna Albino's collection.
- http://www.mtholyoke.edu/~dalbino/

International Postcard Exchange
- A collection of postcards from all over the world.
- http://postcardexchange.net/

Postcard Polaroid
- A blog where people are exchanging Polaroid photos as postcards.
- http://www.postcardpolaroid.com/

Flickr: Handmade Postcards
- A place to display handmade postcards that you have made yourself or received.
- http://www.flickr.com/groups/handmade_postcards/

Flickr: Written Postcards
- A group interested in the postcards and especially the writing on the backs of them. Scan your postcard collection, front and back, then post them.
- http://www.flickr.com/groups/94331648@N00/

Flickr: Postcards
- A group for vintage postcard collectors. Features scans of the postcards as a forum.
- http://www.flickr.com/groups/54136337@N00/

Flickr: Postcards Vintage
- A group to display vintage postcards on Flickr.
- http://www.flickr.com/groups/vintagecards/

Flickr: Weird Postcards
- Post your ugly, weird, bizarre postcards in this group. Members can post 3 a day.
- http://www.flickr.com/groups/weirdpostcards/

Flickr: Nack's Postcards
- The famous Nackles sends postcards every time he goes on holiday. Here they are.
- http://www.flickr.com/groups/nackspostcards/

Flickr: The Postcard Project
- Contribute scanned postcards to the group for viewing and discussion in the forum.
- http://www.flickr.com/groups/thepostcardproject/

Collectable Postcard Magazine
- Information on collecting, buying and selling vintage postcards. Dealer's site.
- http://www.collectable-postcards-magazine.com

LiveJournal: Ugly Postcards
- Information for postcard collectors. Also sharing scans of postcards.
- http://community.livejournal.com/uglypostcards/

Flickr: Ugly Postcards
- Displaying a collection of ugly postcards and inviting others to share their collections too.
- http://www.flickr.com/groups/uglypostcards/

Flickr: I Love Postcards
- A place for posting an eclectic assortment of postcards. Vintage, unique and or funky postcards are preferred. Extra points for kitsch. Hand-made, collaged, and/or hand-painted postcards are welcome.
- http://www.flickr.com/groups/ilovepostcards/

Flickr: Boring Postcards
- Sharing scans of really boring postcards.
- http://www.flickr.com/groups/boringpostcards/

Flickr: Altered Postcard Art
- The only requirement is that you use a postcard, either vintage or new, and alter it to suit your own artistic vision. You can cover the entire card or leaves bits of the original peeking through.
- http://www.flickr.com/groups/alteredpostcardart/

Flickr: Postcards
- Picture postcards, seasonal greeting postcards, and any postcards you care to share with the group.
- http://www.flickr.com/groups/for_you/

Flickr: Vintage Postcards
- Post any vintage postcards from anywhere in the world. You can even scan the hand-written side to help tell the story of the postcard.
- http://www.flickr.com/groups/vintagepostcards/

Curt Teich Postcard Archives
- The core collection in the Teich Archives, acquired by the Lake County Museum in 1982, is the industrial archives of the Curt Teich Company of Chicago.
- http://www.lcfpd.org/teich_archives/index.cfm?fuseaction=home.view

America Hurrah Postcard Sets
- Collection of postcards for sale.
- http://www.americahurrah.com/Postcards/Postcards.htm

The Groman Tjiering Collection
- Features cards with female bathers, heroes, and romance. Pictures and search included.
- http://www.haakwaar.nl/

John Harrowven's Postcards
- Personal collection.
- http://www.btinternet.com/~john.harrowven/

Czech Postcards
- Postcard from Sumava Mountain and Bohemian Forest.
- http://www.jspcountry.cz

Liselotte's Personal Page
- Postcard collection and gallery.
- http://www.luckymojo.com/lilo.html

Houde's Postcards
- Classic photographs.
- http://www.deltiology.com/indxl-pc.html

Great White Fleet, The
- Postcards from the Myers collection.
- http://mars.ark.com/~camorris/gwfleet/gwfleet1.htm

Ed Bertsch's Postcards
- Personal collection.
- http://www.twin-cities.com/ed/scenic.html

Days Past
- Trading in old postcards and photographs.
- http://www.sunnyfield.co.uk/dayspast

AustinPostcard.com
- Providing an informative and sometimes entertaining view of Austin history.
- http://www.austinpostcard.com/

Knotts Berry Farm Postcards
- Old postcards from a collection.
- http://www.malakoff.com/vkb.htm

Edsen Breyer's Postcard Museum
- Personal collection including Scenic Railroad Engines, Vehicles, Victorian Houses, Trolleys.
- http://www.ebpm.com