Kaufmann Kohler

Rav Kohler immigrated to the United States in 1869 and helped build the foundation for Reform Judaism.  It is not surprising that he does not wear a kippah; what is surprising is that none of this more conservative colleagues did either.  This is often held up as one of the things that made Reform Judaism different, but I don't see much evidence for Orthodox or Conservative Jews wearing kippot in 1860's America.