From the OHS PC Database, derived from A Guide to North American Organbuilders by David H. Fox (Organ Historical Society, 1991). -

Active in New Orleans, Louisiana, 1906-1910. William Pilcher and his son Charles Hobart Pilcher.

Source:

From the OHS Database Builders Listing editor, June 1, 2016. -

William Pilcher and his son, Charles Hobart Pilcher, made a final effort as an organbuilding firm. Charles's older brother, Dr. William H. Pilcher had taken a posting as organist in New York City. William [Sr] and Charles H. left New Orleans in 1906 and joined William H. and opened their last venture in organ building. The firm was shortlived, both of the principals returned to New Orleans by 1910.

Sources:

1. Jonathan Hall, "Present and Accounted For: Pilcher Activity in Brooklyn Circa 1900" The Tracker 30:2 (Richmond, Va.: Organ Historical Society, 2009), 20.
2. Concert Life of New Orleans