March 1952 (age 52)

Sigurd visited the Everglades, and also worked with National Park Service officials and Minnesota Sen. Hubert Humphrey to figure out how to preserve and improve the facilities at Grand Portage Historic Site without overstepping the bounds of the cooperative agreemnt with Chippewas.

March 1967 (age 67)

Sigurd traveled to Los Angeles to persuade the L.A. City Council to support the creation of the Owens Valley Wildlife Reserve as a sanctuary for the endangered Tule Elk, a subspecies of elk found only in California. For some time he had been giving advice to the local Committee for the Preservation of the Tule Elk, something he did for many local groups around the country. He would give them ideas for effectively getting their messages out to the public and to public officials, and often enough he would fly out to speak to the groups and bolster their spirits when morale was down. Within days of Sigurd's speech the City Council unanimously authorized the proposal. While the plan ultimately took a different shape, the tule elk have been preserved in Owens Valley, and have been successively introduced from there to Point Reyes National Seashore. The statewide population, once less than 30, now exceeds 3,000.