One of my favorite LOA collections is the set of Christmas cards that Harold Gray drew to send to his friends and associates every year. He started in 1924, probably didn't send one in 1925 when his wife died in late November, and continued until his death. I am missing one card from the early 1930's and I'm not sure which year it is because he usually didn't date the cards, but if you have one that I don't, I would love to finish my collection.
There are over 40 cards, so I think the best thing to do is for me to give you an address where you can see them thanks to Hogan's Alley, the great magazine for newspaper comic collectors. Just be sure to scroll down when you get to the address!http://cagle.msnbc.com/hogan/features/LOAcards/graycards.asp
I'm biased, but I think the cards are beautiful and it would be worth your effort to visit them. The other option is to go to Google and enter "Little Orphan Annie Christmas cards" and click on the first option--that might be the easiest way to do it if the URL doesn't turn blue when I submit it.