Birmingahm Pen Company is a tiny manufacturer of fountain pens and inks located near Pittsburgh, Pennsylvania.
Birmingham Pen Company ink (more in comments) : r/fountainpens
Ink Test: Birmingham Pen Co. Petroleum
Glenn's Pens - Birmingham Pen Company Ink
Birmingham Pen Co Fire Box
Ink Review: How About A Super Sheener? A Look at Birmingham Pen
Ultramarine – Birmingham Pen Company
Tesla Coil Fountain Pen Ink – Birmingham Pen Company
Birmingham Pen March 2019 Ink Subscription — Mountain of Ink
First time ordering from Birmingham Pen Company : r/fountainpens