On these five pages I 've attempted to compile a list of gl. manufacturers ' identification marks found on primarily American bottles and jars. These marks are .Manufacturers ' labels marks. Admittedly, this is by no means a comprehensive selection yet, but we hope it may still be of some help in identifying .Gl. or Gl.ware Identification and Li.ry. Gl. Pattern Index Gl. Lovers Gl. Database Gl. Company List Marks, Labels, and Signatures on Gl .