Zona, I have subscribed to ancestry.com and have been able to find them as SICKAU and SICKAN in the 1900-1930 census as well as WWI draft card registration. they were naturalized. however, on each census it was a different date! Where would I send away for the "first papers" (declaration of intent?). Would these papers list the port of entry? I am also researching the GRITZKE and KILLINGBECK families as well. I have quite a bit of information on the GRITZKE family, as I have met 2 people who are also researching that family. I am more than willing to share the information with anyone who is interested in these families. All the best, Christine