Until then, I'd never really thought too much about the mechanics of answering questions like  this.  Little did I know that it was going to require considerable amounts of time, effort, and even cash.  And even now, I have only a very sketchy idea about Humphrey & Martin, Distillers and Rectifiers of Philadelphia, PA.

The most frustrating aspect of researching glasses turned out to be that fact that there is no one single source of information on how to do  it.  I ultimately learned -- and continue to learn -- the hard way, so this and the following pages may at least save you some trauma to cranium and sheetrock.  The only payment that I might ask in return is to share whatever you find with an intellectual contribution to the pre-pro.com database.

This section of the web is devoted to researching shot glasses and their origins.