"Since I am usually doing research on some aspect of the history of prints, I try to make appointments to visit the print rooms of museums in cities that I happen to visit. When we lived in London on a sabbatical in 1986-87, I enrolled in a year-long class to study lettering engraving at Sir John Cass College, City of London Polytechnic, a college that trained young engravers to pass the Guild exams and become certified engravers. I did this because I knew how to engrave pictorially, but had no sense of how to engrave words or inscriptions so I could print them. As an art historian, I had become curious about the extraordinary calligraphic inscription on an engraving of a Vanitas personification by the Dutch Mannerist engraver, Jan Saenredam. A curator friend at the British Museum suggested that I look at the British Library's collection of engraved calligraphy writing manuals from the 16th and 17th century. After years of research on what became an utterly absorbing topic for me, I ended up writing a long article about this subject (“Calligraphic Inscriptions in Dutch Mannerist Prints,” in Goltzius Studies: Nederlands Kunsthistorisch Jaarboek, 1993). In addition to my art historical discoveries on this topic, I was able to incorporate the technical experience I had gained by studying lettering engraving."