According to the imprint, this photograph was taken by S. Fichtel of Union Hill, New Jersey.  I’m pretty sure it’s Sigmund Fichtel, who was listed in the 1900 census as a photographer, living in Union with his wife Margureth.1

Sources

1.  1900 U.S. census, population schedule, Union Ward 1, Hudson County, New Jersey, enumeration district (ED) 57, sheet 7A, page 146 (stamped), dwelling 91, family 154, Sigmund Fichtel, digital images, Ancestry (www.ancestry.com : accessed 20 August 2012); citing National Archives and Records Administration microfilm T623, roll 974.