October 1952 (age 53)

Sigurd writes on October 25 that he needs to get back to writing again, that he is "emerging as a poet of the out of doors" and cannot let it slide but must put his effort into a book. "Nothing must ever interfere with what you have to do," he wrote. "Look on everything as tho it were your last ."

October 1967 (age 68)

An article with Sigurd's by-line, "The Citizen's Role in Wilderness Preservation," was published in the Jordani Journal , published by the Cornell University Society of Zoologists. The article actually was ghost-written by Rosemary Dolgner of The Wilderness Society (Sigurd was vice president of TWS at the time); it's the only time I know of where he didn't write an article carrying his name.