Have you checked castlegarden.org (for immigration before Ellis Island opened)? Quite a number of Oberles on there. I found the best way to search was last name only, then look at first names. You can also search by ship and year once you have found a potential match, so that you can see the people who traveled together. That is where I found my Alsace ancestors, although there were a number of mis-spellings. Best of luck, Robyn.