Note that a modern card is typically 4 inches by 6 inches and will have the word modern in the title of the item.
There are a few different ways to see if I have postcards you would like to add to your collection.
Main Google Search Box http://www.google.com will show my cards in their main search. But the cards may be several pages down now that Google wants a payment for what is in search. Be sure to enter your search term with the word postcard in the search box. That way you will only get postcard results.
On the OldPostcardsForSale website there is a Google Website Search Box on most pages which will show all items on my website http://www.oldpostcardsforsale.com that match your search terms. This Google website search will return matches with links to the website pages where the items can be found. Just click on the search result to see the postcard image, title and price. Record the pc number of each item so when you get to the page you can scroll down to see the image.
A third way to search my stuff is to Look Through Each Postcard Album on the website where images are shown for all the postcards I have for sale. Get this. There are ten of these albums with 100 postcard lots in each. If you see a postcard item in an album, pull the webpage down where you will find the title and price of the item. But this is a warning. This method is the most fun, but takes the most time. Be sure to record the m postcard number so you can return to it when you want.
Here is a linkrack grid with these albums named, starting with m100's where you will find all items with a pc number from m100 to m199. Get the idea?