A number of women who created children's series came from writing families – generally, mothers and daughters (like the two Elizabeth Stuart Phelpses) or sisters (like Julia A. Mathews and Joanna Hone Mathews). Adelaide F. Samuels and Mrs. S. B. C. Samuels offer a somewhat different example of this category in that they were sisters-in-law rather than biological relatives. Both women wrote professionally for only a short period: Susan Samuels is also among those authors who produced only one series before abandoning the genre. (Adelaide penned two and a standalone sequel.)