Linnie Marsh Wolfe (January 8, 1881 – September 15, 1945)[1] was an American librarian.

[3] She worked as a teacher in Washington and a librarian in public libraries and high schools in Los Angeles, California.

[1] The Muir biographer and environmental historian Donald Worster notes that Wolfe's biography is largely based on her interviews, which were unrecorded and seem "embellished for dramatic effect".

[4] Char Miller criticized Wolfe for including a conversation between Muir and Gifford Pinchot for which no documentary evidence appears to exist.

[5] The book is required reading for rangers and volunteers at the John Muir National Historic Site.