I have a collection of Sierra Club's gorgeous engagement calendars from the 1980s and 1990s that I wish to sell. They are full of amazing photos of wildlife and wild places and have never been used. They are true collectors' items and are irreplaceable. They retailed for around $15 when purchased, but I am selling them for only $10 each. I live on the north side of Ames. Please email me if you are interested. I would love to sell all of them as a set but can sell individually if necessary.