February 1950 (age 50)

A sign of Sigurd's growing fame in the wake of the successful battle to ban airplanes from the canoe country of northeastern Minnesota was his induction this month into Washington, D.C.'s prestigious Cosmos Club. Here he could share a drink or a meal with Nobel Prize and Pulitzer Prize winners or any of the other thirteen hundred distinguished members, as well as stay overnight in its bedrooms. He would stay there often in the years to come as he became involved with the National Parks Association and the Wilderness Society, which shared a three-floor building on P Street Northwest just a block from the Club.

February 1965 (age 65)

A fairly quiet month. On Feb. 8, Sigurd gave the keynote speech at a "Save Our St. Croix" public meeting in St. Paul, hoping to build public support to establish the St. Croix National Scenic Riverway. He spoke to Minnesota state park manager trainees the next day in Fort Snelling, and in mid-February he traveled to Richmond, Va., to speak to National Park Service superintendents from the southeastern United States.