Dr. Grabow Chronology: From Linkman to Sparta

The Dr. Grabow chronology is the sequence of events showing how dating is done for a brand where no single stamp gives a year. The brand changed name, address, ownership, and technical fittings over more than a century; the task, with a pipe in hand, is to determine which period's address and which company's name the stamp corresponds to.

The brand's general narrative is told in the Dr. Grabow entry, and the course of its model names in the Dr. Grabow series entry.

The Chicago Period

At the head of the chain is M. Linkman & Co., founded in Chicago by Louis B. Linkman in 1892. In 1922 the firm built a three-story factory at the intersection of Fullerton and Racine avenues; because this address appears in advertisements and invoices for decades afterward, it is a concrete clue useful for dating.

The Dr. Grabow name is placed as beginning to be used between 1930 and 1931. The name comes from Paul E. Grabow, a Chicago physician Linkman knew; the details of that relationship are told in the Dr. Grabow legend entry. That the firm began marketing its pipes as "Pre-Smoked" in 1937, and registered both that phrase and the Dr. Grabow name as trademarks in 1947–1948, are links in the chronology traceable at the documentary level.

The Second World War years are the most active period for the stamp. Records say pipe names began to be printed in plain block letters around 1943, the slanted block logo and spade emblem appeared in advertisements toward the end of 1944, and around the same time the firm's name in advertisements took the form "Dr. Grabow Pipe Co." The introduction of two-digit postal-zone numbers in major cities, which was also reflected in address stamps, provides an additional marker.