The usage of this term appears in the late 19th century.

This usage appears in statements that describe a patient as being in critical condition, for example.

Galbraith asserted that this usage does not appear until the late 10th century.

This usage often appears as "cold steel" in modern parlance.

This usage appears to have become widespread, although it has not yet been made official.

In the USA, the negative usage appears to have continued into the 1930s.

This usage appears to be *really* old, dating from the 1940s and 1950s.

This is a traditional use of the term, but in the early 21st century the usage appears to be giving way to control bid.

This usage appears on many web pages, usually without attribution of an authoritative source.

Though not generally adopted, this usage has appeared in some authoritative reference works.