Common Exhibitions of Ch. P. Gruppe and Jacobus Cornelis Wyand Cossaar
Sep 7, 1907
Stedelijke Tentoonstelling van Kunstwerken van Levende Meesters
[Urban Exhibition of Works of Art of Living Masters]
Amsterdam
:
Stedelijk Museum
Oct‒Nov 1909
Tentoonstelling van Teekeningen en Beeldhouwwerken
[Exhibition of Drawings and Sculptures Manufactured by Members of the Society]
Amsterdam
:
Amsterdam (exact location unknown)