I Know Your Type #9 Caslon

Caslon's earliest design dates to 1722. Caslon is cited as the first original typeface of English origin, but some type historians point out the close similarity of Caslon's design to the Dutch Fell types.

The Caslon types were distributed throughout the British Empire, including British North America. Much of the decayed appearance of early American printing is thought to be due to oxidation caused by long exposure to seawater during transport from England to the Americas. Caslon's types were immediately successful and used in many historic documents, including the U.S. Declaration of Independence. After William Caslon I’s death, the use of his types diminished, but saw a revival between 1840–80 as a part of the British Arts and Crafts movement. The Caslon design is still widely used today. For many years a common rule of thumb of printers and typesetters was "when in doubt, use Caslon," particularly if no typeface was specified. (Hat Tip - Wikipedia)

Several revivals of Caslon do not include a bold weight. This is because it was unusual practice to use bold weights in typesetting during the 18th century, and Caslon never designed one. For emphasis, italics or a larger point size, and sometimes caps and small caps would be used instead.

With the rise of hot metal typesetting beginning at the close of the 19th century, existing foundry metal typefaces such as Caslon's had to be adapted to specific typesetting technology. This was true again with phototypesetting, mostly in the 1960s and 1970s, and then again with digital typesetting technology, mostly since the mid 1980s. As a result of that, and the lack of trademark on the name "Caslon" by itself, there are many typefaces called "Caslon" with some other distinguishing element, which reproduce the original designs in varying degrees of faithfulness.