There are three who may be said to be the heads of their profession.

As a business matter it was important to him to be recognised as the head of his profession.

He soon became the head of his profession in London, where nothing equal to Thomas Bewick and his pupils had been produced before his arrival.

He is at the head of his profession; he is said to be making ten thousand a year; and he knows no more about it than I do.

I've had one or two little turns also with Mr. John Clay, and I agree with you that he is at the head of his profession.

Palmer and Pritchard were among the heads of their profession.

He stood at the head of his profession in Troy, and in the neighboring region, and was a person of high moral character".

Ruining the man I look upon not simply as the head of my profession but as my own philosophical mentor.

Baker "rapidly ascended to the head of his profession" by the age of 25.

He then illustrates this with the comment that Drs Palmer and Pritchard were at the "head of their profession".