The Development of Symbolic Logic: A Critical-Historical Study of the Logical Calculus. E-book. Formato PDF A. T. Shearman   -  Forgotten Books, 2017  - 

Venn also points out that Lambert's coadjutors were Ploucquet and Holland, and that all three took their impulse from Leibnitz and Wolf.

The Scope of Formal Logic: The New Logical Doctrines Expounded, With Some Criticisms. E-book. Formato PDF A. Thomas Shearman   -  Forgotten Books, 2017  - 

I myself am satisfied With the importance of the work that has recently been done, and I hope that before I have finished, the reader will be so too.