Probably the best method to add postcards to a collection is to attend postcard show and sale. Postcards are typically categorized. Prices vary. But by attending an event, the condition of a postcard can be seen before purchase.
Links to pages in this website.
Wanted By Members of TPCC
Frequently Asked Questions
Why Not Continentals
To find postcards to buy to add to a collection, here are online sales locations:
http://www.Oldpostcards.com (member website)
http://www.Worldpostcards.com (member website)
http://www.USpostcards.com (member website)
http://www.oldpostcardsforsale.com (member website)
Wanted by members. Here are ads from member seeking specific postcards. Click HERE.