Well known in American history is the peripatetic hunter and trapper, farmer and stockholder who at the head of the westward movement pushed into new areas only to abandon them when joined by too close neighbors. These folk were the vanguard of American civilization. Conspicuous among them are Daniel Boone and David Crockett. Less well known are the equally peripatetic professional men - lawyers, teachers, ministers, and physicians - who were largely instrumental in transmitting to the frontier the typical institutions of American life. Like the early group they too abandoned an area when it became stable and settled to turn their footsteps toward a newer frontier.
Muir, Andrew Forest
"David Betton Macomb, Frontiersman,"
Florida Historical Quarterly: Vol. 32
, Article 5.
Available at: https://stars.library.ucf.edu/fhq/vol32/iss3/5