Appalachian Mountain Club is established.

Founded by Edward Pickering and others, it meets initially at 9 Park Street. The oldest nonprofit conservation and recreation organization in the U.S., its purpose is to promote and protect the mountain environment east of the Mississippi. The organization publishes Appalachia beginning in 1876,* and the White Mountain Guide in 1907. It opens its first hiking trail in Tuckerman Ravine in 1879 and its first hut, Madison Spring, in 1888. It has more than 1,000 members by 1900, moves 5 Joy Street in 1923, and is currently located at 10 City Square in Charlestown.