Gregory M. Banik and Marie Scandone, Informatics Division, Bio-Rad Laboratories, Inc, Two Penn Center Plaza, Suite 800, 1500 John F. Kennedy Boulevard, Philadelphia, PA 19102

The Sadtler family has had a long and illustrious history in chemistry, starting with Samuel P. Sadtler, who founded an eponymous company in Philadelphia in 1874 and continuing with his son, Samuel S. Sadtler, who joined in the family business. The scion of this family of great chemists, S. Philip Sadtler (son of Samuel S.) left a permanent mark in spectroscopy with the collections of reference spectral databases that still bear his name. This paper will trace the history of this renowned family, focusing on the intellectual contributions made by Philip Sadtler in founding the field of Analytical Informatics in the era of punch cards and following the legacy of his contributions through the present day.