Great call, nhbenz!
The 1891 Newark, NJ City Directory lists George H. F. Ambs - stoves, etc. - 32 Belleville av.
The 1897 Essex County, NJ City Directory lists George H. F. Ambs - locksmith - 33 Belleville av.
The 1903 Newark, NJ City Directory lists Geo H. T. Ambs - mach - 33 Belleville av.
The 1909 Newark, NJ City Directory lists George H. F. Ambs - mach - 33 Belleville av.
The 1911 Newark, NJ City Directory lists George H. F. Ambs - stoves, etc. - 33 Belleville av.
The 1917 Newark, NJ City Directory lists George H. F. Ambs - machinist - 33 Belleville av.
The 1922 Newark, NJ City Directory lists George H. F. Ambs - mach.
John in the Great 208