On the Short History of Presbyterians and Clerical Collars
PCA pastor and visiting professor at Covenant Seminary Tim LeCroy has a great article dealing with the presbyterian origins of the clerical collar.
Here we see several members of the 18th c. Church of Scotland (Presbyterian) having their hackles raised over some ostentatious clergymen wearing scarlet cloaks and cravats. Later they hold a Synod where they decide that they ought to wear black gowns and to make use of neck bands. This paragraph shows us two things: the wearing of cravats was considered to be distinctive clerical garb, and the synod of the kirk decided ultimately that modest use of neckbands was permitted…