Category talk:French art collectors

I have a beautiful painting by W. Henzel, it is a landscape 24" X 36". I found a ref. # on the back on the canvas abd traced it to a (book?) called the "SYNDICAT FRANCAIS DES ARTISTES-INTERPRETES 1917-1997" can anyone help me find out anything about this artist? maybe the value of his work? Thank you, Bob...Rosmanrealty@yahoo.com