Most of the imagery of the history of printing is necessarily of interior scenes, and it tends to be of a technical nature rather than of social events. Among the wide variety of European publications--143 by one count-- commemorating the 1840 Quatercentenary of Gutenberg's discovery of printing by movable type, that issued by the printers in Stuttgart stands out for its lithographs of the outdoor meeting and procession involving all the book production trades in the area. The publication was Das vierte Säenlarfest der Erfindung der Buchdruckerkunst, begangen zu Stuttgart am 24. und 25. Juni 1840. This publication listed all the many participants, and therefore may serve as a partial directory of the book production trades in Stuttgart at the time. It also included poetry composed and read at the event.