Hallo,
I am no longer a member of the list but I think the following site might be
of use to your members. It is a Polish site with lists, pictures and
information about WW1 cemeteries in Poland.
On many places they also have lists of names of the fallen. For instance,
the cemetery in Topilec, Podlaskie has names from the Allenstein Regiment.
Kind Regards,
TREV:-)