In 1882 Edgeworth David was appointed assistant geological surveyor, Wilkinson delegated much responsibility to him.

At that time in 1833 three sons, John, Alvin and Austin, were old enough to work as assistant surveyors to learn the trade.

Crawford came to Manitoba in 1871 as an assistant surveyor.

At eighteen he became an assistant surveyor, helping to survey Churchill and Sarsden for the 1788 Enclosure Act.

William spent a few years working for his father as an assistant surveyor before gaining work as chief assistant to John Coode.

Haines made his name as a surveyor in the Persian Gulf, and was appointed assistant surveyor in 1826.

Governor Brisbane appointed him assistant surveyor under surveyor-general John Oxley.

He joined his father on the West Australian Goldfields and worked as an assistant surveyor in Kalgoorlie.

After a liberal education under his father's tutorship, Rusden worked as an assistant surveyor in the Lands Department.

Following two years of training, he was made assistant surveyor.