Some studies composed by

Gustave Lazard

(Germany-Aachen,  7.12.1875  -  30-11-1948  France-Paris)

He is the older brother of the more productive Lazard, Frédéric 1883-1948

More about Gustave at Heritage des Eches Francais

Wikipedia has other data about birth-date and birth-place.

 

(All his studies, more exact dates, possible corrections or cooks and exact details about sources can be found in the

Harold van der Heijden (HHdbVI))