Some (most? all?) of Veblen is available for free but in English at Munseys.

They have his books written while at the University of Chicago: "Theory of the Leisure Class" and "Theory of Business Enterprise."

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre

A French translation of TOLC would be, I would imagine, a VERY difficult book to read.  Further, the French were really not so much in need of an Industrial Class economic theory as some others--they already had their dirigisme.  

By contrast, I once heard a Japanese professor present a paper on Veblen in Japan.  All of Veblen's major works had been translated and there had been several hundred books and scholarly papers since then.  It could be argued that the Japanese took Veblen more seriously than any other group.

The paper
http://elegant-technology.com/TVjapI.html

The Bibliography
http://elegant-technology.com/TVjapIN.html

Here's to your great success in understanding and promoting heterodox economics, Institutionalism, and Institutional Analysis.

"Remember the I35W bridge--who needs terrorists when there are Republicans"