Fans of the Green Bay Packers and history buffs will soon be able to literally, stroll down memory lane.  The Packers Heritage Trail was launched today and the self-guided, walking tour of historically significant locations in the Packers history between 1919-1968 will be launched on June 15.  The brainchild of former Packers beat writer for the Green Bay Press Gazette and Milwaukee Journal Sentinel, Cliff Christl and his wife Shirley, the heritage trail is patterned after the Freedom Trail in Boston.  Each stop of the tour will be marked by a bronze plaque with at least a 250 word narrative of the location's impact on the NFL's most storied franchise.  Christl enlisted the help of a volunteer board of directors for the Packers Hertiage Foundation and quickly realized how much local government, business and the general public were behind the idea.   An avid historian of the franchise, Christl narrowed down a list of sites to 22, with 17 of those locations still standing.  From the original Press Gazette building where the franchise was formed in August of 1919, to Curley Lambeau's birth home, the Indian, then Acme Packing company, Hagemeister Park, Bellevue Park, city stadium, St. Willebroad's Parish, the Elks Club lodge, the Hotel Northland just to name a few.  The Neville Public Museum will serve as the trail head, with two spurs.  One covering the franchise's earliest days with locations near downtown Green Bay.  A second branches all the way to Allouez, where Vince Lombardi lived, to St. Norbert College in De Pere.  The walking tour downtown covers approximately four and a half miles.   The trail, it's locations and details on each stop are highlighted on the foundation's new web site, PackersHeritageTrails.com.   On the link below, you'll hear more about the trail from Christl, Packers President and CEO Mark Murphy and Brad Toll, president of the Green Bay Convention and Visitors Bureau.  Happy trails Packers fans!