I purchased foot-power lathes, drills, etc., to develop models of my various patents in belts and equipment. I installed them in one of her best rooms in each succeeding one of perhaps twenty posts, soiling the carpets with grease, filings and shavings, which would have driven most wives mad. Nannie not only endured patiently, but encouraged and assisted in the work. She was also my amanuensis for sixteen years, until I became proficient on the typewriter, I believe the first army officer to do so. The Secretary of War ordered that any officers of the newly organized regiments of infantry and artillery who so desired could apply for transfer to the cavalry, to fill the vacancies caused by the stoppage of promotions. I was so restive and likely to be contentious that duty in the infantry, where I would have little to do, I feared might lead me into controversies. I thought the better opening for success would be in the cavalry, but as I knew the cavalry would be among the hostile Indians and farthest away from civilization, I left it to Nannie to decide whether our mutual success would be enhanced by the transfer and whether she was willing to make it. She decided that my prospects would be bettered by participation in the hazardous and more serious duties of the cavalry, so I applied for transfer. After recovering from a severe case of typhoid that summer, Nannie, by her lively character and natural accomplishments, assumed a prominent place in the regiment, and was one of the chief organizers of the many dances, balls, and other social gatherings which we had during our stay at this post. A large regimental ball was scheduled for December 29th, and Nannie invited her sisters, Lulie and Katie, to visit her in time for this event. In those days it was unusual for young ladies to travel long distances alone, and their parents were uneasy about the journey. They should have arrived at Christmas, but floods intervened, and they reached Atlanta on the 28th at four o'clock in the morning. I wrote my parents-in-law immediately, handing the letter to Captain Ogden, who promised to mail it. Some days after, I received a telegram inquiring what had become of the two girls. On questioning Captain Ogden, I found he still had the letter in his pocket! Lulie and Katie were beautiful, and in the prime of their girlhood, and were much sought after at dances and other social gatherings.