John,
This is so interesting. I have just started to research the Eisen family. I am Nellie and George's granddaughter, daughter of Alvan. My grandmother was Helen Dooling, called Nellie, and my grandfather was Julius, called George. Both Alvan and Louise are dead. Aunt Lou died in 1997. My father died in 1981. I believe that I met Caroline as a child. I believe she was still alive when my grandmother died. I may have even met you. I live in CT and work in NYC. I have three children who are 16, 13 and 10. Louise had two children who both live in Milton, MA and between them they have nine children. That's some background. Let me know what you are looking to find out.
Peggy Eisen