In early usage, the word gang referred to a group of workmen.
In early usage, the phrase was given as "the whole six yards."
An early usage of the phrase is dated by 2001.
There are various earlier usages of the term "iron curtain".
This is an early usage of the term in a modern rock and roll song.
Its earliest usage in this sense dates to the mid-1930s.
I suspect earlier usages in English can be found.
In its early usage, the term was not considered offensive or derogatory.
Formerly, various claims of earlier usage had been made.
An early usage can be found in an English 1892 periodical.