Dating hand blown bottles
At least a few American glass companies were hand-blowing bottles into the mid-20th century (Toulouse 1971).This page and associated sub-pages allows a user to run an American produced utilitarian bottle or a significantly sized bottle fragment through a series of questions based primarily on diagnostic physical, manufacturing related characteristics or features to determine the approximate manufacturing age range of the item.
Once the likely bottle age or date range is determined, some examples of other places to look for more information is provided.: -It is about 9" (23 cm) in height and 2 3/8th inches (6 cm) in diameter.
A second boy looks on with (possible) admiration of the gaffer as they were the highest paid and most elite workers on the glass factory floor and among the highest paid of all skilled laborers during the 19th century (Barnett 1926).
It was also the position that glass factory boys aspired towards (Skrabec 2007).
Bill Lindsey's fantastic bottle identification and information site.
Loaded with detailed descriptions and diagrams, and luscious high res photos, this is a superlative one-stop educational resource and vicarious digger experience.