Ellen H. Clapsaddle
This is postmarked in 1909 with a one cent stamp.
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Ellen Hattie Clapsaddle (January 8, 1865 - January 7, 1934) was an American illustrator/commercial artist in the late 19th and early 20th centuries. Not only is her style greatly admired and well recognized, today she is recognized as the most prolific souvenir/postcard and greeting card artist of her era.