Graphics Fairy. I have added a scripture to it as best as I can, so you can print it out on card stock and send it to a friend! If you want a back to it, Graphics Fairy has a nice one on this post.
I have been trying to figure out a way to make the text print out clearly, so I have uploaded this file as a pdf for download. Here is a link to it. It prints out in the middle of the page, unfortunately, but perhaps those who understand their printer better than I do can print 2 cards to a page to use the space better.
Here is a site on the history of postcards.
p.s a little bit of gold or silver glitter applied to the dark spots of the rose and leaves would be nice, as that is what I think the original postcard had.