Dear John,I think you are looking for the organisation JOINT.There indeed
is and has been such an organisation.We lived in Budapest after the war and
can thank the Joint to be able to exist and to go through University years.
They also paid the expenses of our immigration to Australia and that of my
mother and aunt.There are numberless Jews grateful to the JOINT all around
the World.Their headquarter is in New York City. I do not know the address
but I think Genners who live there might give you exact information.
Best regards to your aunt in Poland.