1917:
Gabriel & Co
Gabriel & Co. A.B.Row. Bham - General Aircraft Engineering Work
Rec. Num. 1 of 2
Source: Aeroplane May 2nd 1917
1918:
Gabriel & Co
Gabriel & Co. A.B.Row, Birm. Aero Castings, Sheet Metal Work
Rec. Num. 2 of 2
Source: Flight October 3rd 1918