Thatcher may have been the first person to put a milk bottle to use, but George Henry Lester was the first person to patent the idea, which he did with his Lester Milk Jar in 1878. In fact, there were numerous other patented milk jars prior to Thatcher’s, though Thatcher was the first to use a cap.

Most milk-bottle manufacturers embossed logos onto the bottles they produced, which makes it relatively easy for collectors to differentiate among the plethora of dairies. Both corporate and mom-and-pop dairies had their logos embossed on the outsides of what are now considered antique milk bottles. Some sellers used the exterior surface of the bottle as advertising space.

The earliest milk bottles, which tended to feature a bail-type closure (also called a swing stopper), tend to be the most collectible. Near the turn of the 20th century, bottles requiring bail closures were replaced with so-called “common sense” bottles that were fitted with paper caps at their mouths.

Each regional dairy commissioned its own bottles, but there is little variety between the bottles themselves. Milk bottles are almost exclusively cylindrical with a short- or medium-length neck. Few had long necks, although that shape was slightly more common in France. Milk bottles also tended to have a rounded collar but not a wide mouth to make pouring easy.

As the 20th century progressed, milk bottles got shorter and squatter, and fewer dairies went to the expense of having their bottles embossed with their logos or slogans. Instead, they followed the lead of soda bottles and used applied color labels, which are known in the trade as ACLs.

In addition to having a fairly standard shape, milk bottles are also almost unanimously clear. For a while, some amber-colored milk bottles were produced, a response to the urban legend that dark glass would keep milk from spoiling when exposed to light—in fact, heat is the culprit. On rare occasions, white milk glass and green glass were also used.

The heyday for milk bottles—in the United States, anyway—was between the two World Wars, but the era of the milk bottle was relatively short-lived. By the ’40s and ’50s, glass milk bottles were supplanted by waxed-paper cartons and, later, plastic jugs. Milk bottles survived longer in Europe, especially in the United Kingdom, than they did in the United States.

Today, when collectors want to display their vintage milk bottles, they commonly fill them with white sand or a similar substance to make them look like they are filled with milk.

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