Many marks are encountered that indicate the company whose product was contained within it, or are trademarks (“brand names”) that give no indication of who actually made the glass, and those are (with quite a few exceptions) , not included in my list.
From the standpoint of most collectors of antique bottles, the name and location of the company the bottle was made for, and the name of the product that was originally contained in the bottle (one or both of which may be embossed on the bottle) is often considered to be of more interest or importance than the glass factory where the bottle was actually manufactured.
Other sources of information I have used (including reference books, magazine articles, websites, and in some cases, email or voice communications) would include: Helen Mc Kearin, Rhea Mansfield Knittle, Stephen Van Rennselaer, Harry Hall White, Alice Creswick, Dick Roller, William S. In the meantime, you might try an internet search for more information on these names……there is a wealth of information out there, with many books in libraries and/or online pertaining to glass history, antique glass collecting, glass container manufacturing, and related fields).
Walbridge, Cecil Munsey, Roger Peters, Gene Blasi, Adeline Pepper, Arthur G. This site also utilizes, to some degree, my own research and observations over several years of collecting & studying antique bottles, insulators and other glassware. It has been increasingly more difficult to keep up with answering emails and posts concerning glass bottle markings and related information. In about 40 to 50 percent of the cases, after I answer a query by email, I do not receive the slightest reply or acknowledgement, not even a brief “thank you”.
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However, the general style, shape and glass color of a container can give strong clues to approximate age. That book is the best reference work ever published on glass manufacturers’ marks on bottles, but it does contain many errors which have been discovered over the last several decades since it’s publication. Fletcher, Norman “Ted” Oppelt, Dick Cole, Harvey Teal, Dean Six, Tom Neff, Albert Morin, John P. (Eventually, I may add a page on this site with lists of books by some of the above-named persons which I found to be of most value.
I apologize if you write to me via email, or post on one of these pages and do not get a personalized reply!
Often, I simply don’t know the answers to a lot of questions that are sent to me.
The wide world of glass and bottle collecting is a TREMENDOUS field and there are many, many unanswered questions still out there concerning bottle markings, bottle manufacturers’ histories, etc.
I should mention that only a small percentage of comments received are actually published on this site, since if every one was answered and published, my site would soon be loaded down with thousands of comments that could cause the pages to load more slowly for those with slower or older computers.
On earlier flasks, fruit jars, and soda bottles, and especially examples produced in the mid-nineteenth century period (1840s-1860s), the full factory name or initials may be embossed across the front.