My name is Gerco Klopman and I read your reply on my question just today. I'm sorry you had to wait so long.
My direct e-mail-address is email@example.com
I know the names of Lammert's children.
I'm very interested in having contact with some descendants of Lambert Klopman. I think I can help them to describe the old fotograph.
Please use the above mentioned e-mail address, so I won't miss your reply.