Glass objects come in all shapes and sizes, from delicate hand blown decorations to everyday bottles to huge expanses of plate glass for homes and buildings. Glass is used to make many everyday items, and also to make laboratory and medical equipment.
A glazier works with glass for windows, mirrors, etc.
A glass blower makes decorative and useful objects like vases, glasses etc. There is free blowing for one-of-a-kind pieces, and mold blowing to make one or more of a specific item.
There is a retired glass bower that has a shop in my town and I am plannng to sign up for his classes in the spring. Perhaps again in the fall when he teaches how to make Christmas ornaments!
There are also those workers that make stained glass, cut glass, etched glass, crystal, etc. I used to collect wine glasses that were hand blown and hand painted. I had over 300 in all shapes, sizes and colours. Many were Austrian or Bohemian crystal that were hand painted with gold and enamel, or just enamel. I often wondered who made them and who drank from them.
Also look for names of glaziers and glass workers in directories, architechtural periodicals, building magazines, etc. The Patent Office is the place to check for inventors of methods and designs in the glass industry.
Glass: interesting facts connected with its discovery and manufacture c1868
List of Members - Society of Glass Technology, 1919
List of Members - Society of Glass Technology, 1921
List of Members - Society of Glass Technology, 1925
Catalogue for Gas & Electric Lighting (globes), USA c1910
Price List and Glass Calculator, Thompson & Harvey Glass Works, Adelaide c1910
Tarif des verres blancs ordinaires et fins facon, cristal des manufactures reunites 1870
Adams and Strickland, importers, wholesale and retail dealers in crockery, china, glassware, etc, Maine 1891
Wage scale and working rules adopted by the Glass Bottle Blowers' Association of the United States and Canada and the National Glass Vial and Bottle Manufacturers' Association
Proceedings of the Glass Bottle Blowers Association of the United States and Canada, composed of glass bottle blowers 1908-1909
Proceedings of the Glass Bottle Blowers Association of the United States and Canada, composed of glass bottle blowers 1902-1906
Minutes of proceedings of the ... annual convention of the Glass Bottle Blowers' Association of United States and Canada 1913-1921
History of the Worshipful Company of Glaziers of the City of London, otherwise the Company of Glaziers and Painters of Glass w/list of members 1919