6 books
Supplement to Epitome of the Synthetic Philosophy (Concluding the Principles of Ethics) (Classic Reprint)
Epitome Der Synthetischen Philosophie Herbert Spencer's (Classic Reprint)
Author & Printer; A Guide for Authors
Authors' & Printers' Dictionary; A Guide for Authors, Editors, Printers, Correctors of the Press, Compositors, and Typists, with Full List of Abbreviations
The Collected Mathematical Papers of Arthur Cayley, Volume 5
Authors' and Printers' Dictionary