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Image courtesy of the slide collection of Jack Harper.
Image courtesy of Larry Kuhns.
Image courtesy of Larry Kuhns.
Image courtesy of Larry Kuhns.
Image courtesy of Larry Kuhns.
Image courtesy of Larry Kuhns.
Leaves of yarrow. Image courtesy of Larry Kuhns.
Flowers of yarrow. Image courtesy of Larry Kuhns.
Flowers of yarrow. Image courtesy of Larry Kuhns.
Flowers of yarrow. Image courtesy of Larry Kuhns.
Leaves of yarrow. Image courtesy of Larry Kuhns.
Image courtesy of Matthew Naedel.
Image courtesy of Matthew Naedel.