Potter (Beatrix) Autograph Letter signed with drawing of Hunca-Munca, 4pp., replying to a young fan "it is the first that I have had from an American boy", discussing her preparations for her next book "published next September. It is about a hedge hog" as well as preparations for future works "I have ever so many inside my head but the pictures take such a dreadful long time to draw!" and her domestic pets including a "real live tame hedge-hog... when she wakes she stretches herself and gapes and shakes herself just like a dog. She bites when I tease her" and her mice "Hunca-Munca is very well; she will sit on my finger!... I have 2 piebald mice, but Hunca Munca fights with them", folds, corner crease, 5th March, 1905.*** A superb picture-letter by Beatrix Potter with a charming drawing of her pet mouse Hunca-Munca sat on her finger. Potter references her work on her upcoming publications The Tale of Mrs. Tiggy-Winkle and The Pie and the Patty Pan and includes mention of her frustrations at the work required "I get quite tired of the pictures before the book is finished" as well as charming descriptions of her domestic pets.