Margaret Mitchell autograph note signed, dated 20 December 1948, shortly before her unexpected death the following year. On a card with her printed name of Mrs. John Robert Marsh, Mitchell writes a thank you note to her local Post Office, ''Dear Post Office Friends: I appreciate so much the friendly helpfulness you have shown me during this past year. Here is something to keep you going during the rush. / Margaret Mitchell Marsh''. Card opens to a size of 4'' x 6.125''. Accompanied by original envelope with ''To The Staff of the Post Office'' handwritten by Mitchell. Minor wear, overall very good plus condition.