This card seems a bit sad.  There’s no postmark, so it was either mailed inside something else or hand carried.  It is written in such faint pencil that I can barely make out:

My dear mama, I am feeling quite good.  They are so good to me.  Dr. Kling, come by to see Monday three times and Monday 5 times he takes the best of care of me.

My dear you down know the pain I have gone threw – and still have.  I hope you will all have a happy easter, and think of me write.

From Nan

As you can see, it’s rather sad and the misspellings and confusions make me wonder if the card  is from a younger person or someone very ill.