03 Oct Triangulation Surveys
Throughout the 1920s, J.T. Underhill spent his summers doing triangulation surveys along the mid-coast and in the mountains of BC. In the early 1920s, J.T. named numerous geographic features (Islands, Bays, Inlets, Channels, etc.) in BC after family members, crew members, and others. Many of the names are officially in use today, including Underhill Island, Clare Island, and Lewall Inlet. Both of the Underhill brothers were heavily involved in mineral claims and mining surveys during this period.
Pictured are various Triangulation surveys created throughout the 1920s.
More information on Underhill Island and this triangulation survey is here.