Lettres philosophiques /
Voltaire,1694-1778.
A Amsterdam, : Chez E. Lucas, au livre d'or.,
1734..
There are 3 eds. of the "Lettres philosophiques" with above place, date and pub., the original having 387 p. For full account see Bengesco. Voltaire; bibliographie, v. 2, p. 9-21.
This ed. has several errors in pagination: p. 169 is called 199 and numbering then continues from 199 to end, making real no. 324 instead of 354. p. 37 is printed 13.