This chart primarily reflects the establishment of Regional Offices -- this chart, like several others, is "after the fact documentation" of what has occurred. Regional Offices were established in the later part of 1937 but apparently not formally documented on a chart until August of 1938. With the establishment of Regional Offices, the Branch of Engineering moved to Washington and the Chief Engineer, Frank Kittredge, became the first Regional Director in Region IV, San Francisco, California. A Safety Division as a functional entity first appears and the U.S. Travel Bureau shows up as a National Park Service function. During this period, Arno B. Cammerer stepped down as Director and became the Regional Director in Richmond. Newton Drury became the fourth Director of the National Park Service. Note that there were no Assistant Directors in this organization.

Organizational Chart