Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Linden is an 'L' station and the northern terminus of CTA's Purple Line. It is the only 'L' stop in Wilmette, Illinois, and is located at 349 Linden Avenue. It is the northernmost 'L' station in the CTA system, and it is the only remaining station on the Purple Line at ground level after the line descends from the elevated embankment shortly after crossing the North Shore Channel and entering Wilmette. An older station, the Linden Avenue Terminal, remains; it is listed on the National Register of Historic Places.